Unreasonable compared to what? Physical store markup? Other digital marketplaces like Google Play, Kindle? Spotify? Steam? If App makers in general are hurting and they are all paying the same 30% cut, wouldn’t the market have 43% markup?

You also act as if money on the store is coming from small Indy developers and not big corporations and mostly play to win games. Especially since the former big money makers have stopped allowing in app subscriptions.