Affiliate marketing has a big impact on customer trust in the marketer, and it also saves on ad costs, since you pay per order rather than for publishing an ad. Let me show you how to calculate it correctly, so you don’t lose your profit and you give the marketer their fair share: First, know your product prices, for example whether they’re under or over SAR 100. If they’re under, it’s better to agree on a fixed commission amount. If they’re higher, it’s better to use a set percentage. For example, at 20%, a product priced at SAR 250 means a commission of just SAR 25. How to calculate the commission: Commission = product price × commission rate 25 = 20% × 250