exp said:
What's this obsession with making sure developers get money? Do you have the same issue with used car sales???
Let economics work. If the game is great, fewer people will sell it onto the used market. ANY product on Earth can be bought and sold used.
This.
Let the free market work and you will make what you deserve to make. If you don't make enough, create a better game.
The home builder doesn't get paid when the person who bought it from them sells it to another party.
Ford doesn't get paid when Jack's used car lot sells a focus.
Uptown diamond doesn't get paid when someone sells their engagement ring to a pawn shop.
GE doesn't get paid when someone sells their washer and dryer on craigslist.
An author doesn't get paid when someone sells their book to half price books.
Your industry is and shouldn't be any different. Release the game, make your money, move on to the next. Don't want to deal with used game stores selling your game at a discount? Then don't distribute to them.