Wouldn’t that „test“ imply that Apple isn‘t doing any kind of marketing/promotions through the 30% cut? At least here in Germany, discounts and boni of 10-15% w

Wouldn’t that „test“ imply that Apple isn‘t doing any kind of marketing/promotions through the 30% cut? At least here in Germany, discounts and boni of 10-15% when buying iTunes gift cards are quite frequent. And these discounts influence at least my app buying behavior. In addition, these discount offers are advertised and so indirectly promote the App Store to millions of people. Developers profit from this in one way or the other. In your test just cutting the 30% „Apple tax“, the developer would still profit from these discounted gift cards. But it’s not the developer giving the discount from his cut, but Apple from the 30%. Moreover, the 30% covers not only handling and processing App Store Infrastructure and sales, but as well the editorial sections of the App Store promoting news apps daily. There already exist reports on how this editorial content boosts app sales. So, your test would still take all this for granted and therefore would be highly skewed. The data would not be „statistically significant“ at all.