Thinking about $15-20 indie games that made it onto Epic Store.
$15 is same dev cut as a $19 game on Steam/etc. But during a sale when Epic give customers $10 coupons? People are paying $5 & you get the same cash as if you sold for $19 on Steam.
Even $20 sticker price on Epic Store is very good: more money than a $25 purchase on Steam & that jumps to a purchase for only $10 of customer cash during a sales event due to the Epic coupon subsidy.