Guides · For shops and brands
How do I test performance-based creator marketing on a small budget before I scale?
Before launch, set one metric and a threshold, such as cost per order kept, and note when you scale up or stop. Pick a few products in stock, the same terms for everyone, and contact far more creators than you need: products creators can pick do not produce posts by themselves. Even without fees, samples, discounts, commission and your time cost money. Evaluate once return windows close: in Germany, almost five weeks after the last order at the earliest.
Last updated:
With wyrld Boost you put your budget behind creators who feature your products, starting today, and pay for results.
Available is not the same as posted: the real risk in a test
An affiliate programme, a listing on a network or a platform where creators can pick your products does not produce posts by itself. Many partners in a programme never become active. The creators you most want for your brand, in particular, rarely post without a concrete reason.
For the test, that means: if only one of ten creators you contact posts, you are mainly measuring how little your offer appeals, not how well creators can sell your products. The real job is getting creators to actually post, as many as possible in the same period, and then seeing for each one who sells.
- Count requests, agreements and posts separately. The share of creators contacted who actually post is a metric of the test in its own right.
- Give a reason with a date, such as a product launch or a shared posting window. A fixed bonus per post is another lever. It is paid even without a sale, though, so it goes into the budget as a separate item.
- Contact creators who already feature your products first. They know the product, and they may not need a sample.
- Decide in advance how many posts you need before you evaluate the test at all. Below that, don’t judge the channel; change the reason or the terms instead.
The test plan in seven steps
- Set the goal and the threshold: one main metric, one value. For sales, cost per order (CPO) works well, counted on the orders that are not sent back. Say an order worth €60 net leaves you €30 after cost of goods, shipping, payment fees and your share of return costs. Then your threshold is €30 per order kept. The guide on cost per sale shows how to work it out in more detail.
- Choose the products: for example two to five products that are in stock in every size, colour or shade for the whole period and whose margin can carry the discount and the commission. If a variant sells out, you lose sales the post would have brought, and the test tells you less about the creators.
- Put the terms in writing: commission as a percentage of net value, any extra pay per click, any discount code, how returns and cancellations are handled, when you pay out and until when the terms apply. Include the exact wording of the ad disclosure as well: in Germany, the commercial purpose of a post usually has to be made clear even if it is paid only by commission (§ 5a(4) UWG).
- Pick and contact the creators: work backwards all the way to the requests. If you want to see at least 20 orders kept and expect two per creator who posts, you need ten creators who post. If only half of those you contact post, contact 20. Both figures are made up; use your own once you have them.
- Set up tracking: a separate link and a separate code for each creator, plus a test order through every link before launch. Without results per creator, you won’t know later who to carry on with.
- Set the time frame: for example four weeks in which the posts go live, then a follow-up period until the return window has closed. In Germany, private buyers can usually withdraw from an online purchase within 14 days of receiving the goods and then have up to 14 days from the withdrawal to send them back (§ 312g(1), § 355(2) and (3), § 356(2), § 357(1) BGB). With two to three days of shipping each way, that is almost five weeks after the last order, so a little over two months before you can decide. If you voluntarily offer a longer return period, say 30 days, the follow-up period grows accordingly.
- Record a comparison period: before launch, note how often the test products sold in the weeks before, ideally also in the same period last year. Write down any discount campaigns or ads running at the same time. Otherwise you can’t tell later if the sales were additional.
What the test costs even though you pay no fee
| Cost | Even without a sale? | Example (assumed) |
|---|---|---|
| Samples incl. shipping | yes, up front, also for creators who don’t post | 12 × €31 = €372 |
| Discount code | no, per order kept | 24 × €10 = €240 |
| Commission on sales | no, once approved | 24 × €6 = €144 |
| Commission on returns | yes, if you approve before returns close | 6 × €6 = €36, €0 if you wait |
| Your time | yes, for outreach, briefing, evaluation | 15 hrs × €40 = €600 |
| Buffer | yes, for replacement samples and reshipping | €100 |
The figures are made up and are not benchmarks. The example assumes 20 requests, twelve creators who agree and get a sample, and ten who post. They bring 30 orders of €60 net each before discount, with a €10 discount code and 12% commission on the remaining €50. Six orders are sent back. If you wait to approve commission until the return window has closed, the test costs €1,456. Only €384 of that, discount and commission, depends on results. The other €1,072 is spent even if nobody buys, €62 of it on samples for the two creators who never posted.
Not included are pay per click, a fixed bonus per post and network or platform fees. Depending on the agreement, these can also arise without a sale.
If you also pay individual creators a fee or a fixed bonus for posts with photos or videos they create themselves, Künstlersozialabgabe (the German artists’ social levy) may apply: in 2026 it is 4.9% of the payment excluding VAT. As a brand advertising itself, you are liable once what you pay self-employed artists or writers for assignments in a calendar year exceeds €1,000 in total (§ 24(2) KSVG). According to the Künstlersozialkasse (the artists’ social insurance fund), payment in kind counts too, so a sample a creator keeps in return for a post may be included. Commission from affiliate partnerships is not part of the levy base.
Stop or scale up: rules that are fixed before launch
| Result after the follow-up period | Rule (assumed) | Decision |
|---|---|---|
| Too few posts | fewer than eight creators posted | don’t judge the channel yet; change the reason or the terms |
| Not enough data | fewer than 20 orders kept | don’t scale up yet; extend the test or add creators |
| Pays for itself | CPO including samples below €30 | scale up, more creators on the same terms |
| Covers ongoing costs only | CPO without samples below €30, with samples above | carry on with the same creators, add more slowly |
| Does not pay for itself | CPO without samples above €30 | stop, or change products and terms |
| Clicks without sales | under 1% of clicks become orders | check product page, price and stock first |
In the example above, ten of twelve creators posted and 24 orders were kept. The CPO including samples is €31.50 (€756 ÷ 24), and €16 without samples (€384 ÷ 24). By these rules, you carry on with the ten and add more slowly. Their samples are already paid for, while every new creator needs one again, even one who never posts. The rules leave out your time and the buffer, because they don’t grow with each order when you scale. In the example they came to €700 together, a cost you weigh up separately.
Set the rules before the first figures come in. If you only pick the threshold afterwards, it is easy to fit it to the result. Small numbers swing a lot: with 20 orders, a single return moves the return rate by 5 percentage points. Apply the same rules per creator once enough orders come in. Some creators may pay for themselves even when the average does not.
Results per creator: a template to copy
Fill in the template for each creator once the follow-up period is over, including those who agreed but never posted. Clicks come from the links, orders and returns from your shop or affiliate programme. Assign samples and shipping to the creator who received them. Otherwise creators without a post look as if they cost nothing.
Test results per creator
Test: [products], posts from [date] to [date], follow-up period until [date] Threshold: CPO including samples below [€], at least [number] orders kept Contacted: [number], agreed: [number], posted: [number] Creator: [initials] Agreed on: [date], first post on: [date or no post] Posts: [number], formats: [story, reel, video, storefront] Link and code: [ID] Ad label checked: [yes or no, date] Clicks: [number] Orders: [number], of which returned or cancelled: [number] Orders kept: [number] Net sales after returns: [€] First-time orders: [number] One-off: samples incl. shipping [€] Ongoing: discount [€] + commission [€] + pay per click [€] + bonus [€] = [€] Ongoing CPO: [ongoing ÷ orders kept] CPO including samples: [(one-off + ongoing) ÷ orders kept] Comparison: sales of the test products in the comparison period [number] Decision by the rule: [scale up, carry on, extend, change the reason or stop] Next time: [one sentence]
How it works on wyrld
With wyrld Boost, you put your budget behind creators who feature your products, starting right away. You provide a campaign budget and set the products, KPIs and time frame. Many creators take part at the same time and show your products in their own videos and storefronts. The payout follows the KPIs you set in advance, for example sales, clicks, watch time or reach. Each creator decides for themselves if they take part, so neither the number of participants nor the number of sales is fixed beforehand.
You decide where people buy: only in your shop, on Amazon or with price comparison across the shops that carry your product. If you choose only your shop for the test, the campaign doesn’t run through other shops. Creators label Boost campaign videos as advertising. You set the campaign budget. How the pool is shared out is agreed with wyrld before launch, and after the campaign you see which creator brought which results.
If you have an affiliate programme through one of the large affiliate networks, wyrld appears in it as a single partner, through which creators can usually already pick your products. With the brand and shop subscription, you see every day which creators behind it feature your products and who actually sells: clicks per creator, plus sales where the shop reports them. That tells you whom to contact first for your test, and wyrld can set up your own terms with individual creators. If other partner shops also stock your product, the community sees their offers and prices alongside yours outside a Boost campaign and chooses where to buy. Prices for the subscription and Boost are available on request.
Frequently asked questions.
What is the minimum budget for a test with creators?
There is no fixed minimum. Start with the costs that arise even without a sale: samples and shipping for every creator who agrees, your own time and a buffer. Discount and commission only come on top for orders that are kept. In the example on this page with twelve creators who agreed, that is €1,072 regardless of results and €384 for discount and commission, all figures assumed.
How long should a test with creators run?
Plan for two phases: for example four weeks in which the posts go live, then a follow-up period. For online purchases by private buyers in Germany, that usually means 14 days to withdraw from receipt of the goods and up to 14 more days to send them back, so almost five weeks after the last order with shipping. A longer voluntary return period adds to that.
How many creators do I need for a test?
There is no fixed number. What counts is how many end up posting, not how many agree or could pick your products. Divide the orders kept that you need for a decision by the orders you expect per creator who posts. That tells you how many creators need to post. Contact clearly more creators than that, starting with those who already feature your products.
Do creators in a test have to label commission-only links and discount codes?
In Germany, usually yes. Under § 5a(4) UWG, the commercial purpose must be made clear unless it is immediately apparent from the circumstances; a benefit in return is presumed. The media authorities want an asterisk and explanation by affiliate links, and “Werbung” or “Anzeige” (advertisement) by discount codes. With agreed terms or samples, the post itself is usually advertising: label it at the start, and throughout videos focused on the product.
What do I do if the test doesn’t pay off?
Look at where it breaks down. If only a few creators posted, the test says more about your offer than the channel: change the reason or the terms and ask again. If hardly anyone clicks, look at the creator or the content. Lots of clicks without sales point to the product page, the price or a sold-out variant. Then change just one thing and test again.
Last updated:
Sources
This page explains test design and the legal position in Germany in general terms and is not legal or tax advice. What applies to your brand is something to check with your legal or tax adviser. Accessed on :
- German Unfair Competition Act (UWG), § 5a (commercial purpose)
- Die Medienanstalten (German media authorities): guide to labelling advertising in online media, May 2025 (German)
- German Civil Code (BGB), § 312g (right of withdrawal for distance contracts)
- German Civil Code (BGB), § 355 (right of withdrawal)
- German Civil Code (BGB), § 356 (start of the withdrawal period)
- German Civil Code (BGB), § 357 (returning what was received)
- Künstlersozialkasse: FAQ for companies (question 24, influencers; German)
- Künstlersozialkasse: artists’ social levy and rates (German)
- Künstlersozialkasse: assessment basis, payment in kind (German)
- German Artists’ Social Insurance Act (KSVG), § 24 (who pays the levy, €1,000 limit)
- German Artists’ Social Insurance Act (KSVG), § 25 (payment excluding VAT)