I’m sorry, but it’s not how you build community of developers and users-developers. What you want to achieve with position like “Only permanent price drops”?
I don’t even understand how you would justify that. Assets get rotten? Developers should be punished? Users should be rewarded?
Your proposal is like a slap to all developers 
Sales brings more money to developers due to more clients and users gets more assets due to lower prices. Win-Win.