The Epic First Run programme allows developers of any size to claim 100% of revenue if they agree to make their game exclusive on the Epic Games Store for six months.
After the six months are up, the game will revert to the standard Epic Games Store revenue split of 88% for the developer and 12% for Epic Games.
How much does steam charge for allowing the games on its platform?
Steam takes a 30% cut of all sales iirc, but does not enforce exclusivity agreements to their platform
Geez, 30% is a lot.
30% is standard in industry. Apple/Google/Xbox/Sony all take 30% from their marketplaces as well