Stardew likely qualifies for the reduced store cuts. Steam _lowers_ the percentage for a game when it sells high. Still somewhere between 10 and 25%, though.
Generally, the Steam cut is considered “fair” for Indy devs. The benefits of steam (discoverability, massive audience) generate more sales. My Indy dev friends are not upset about the steam cut at all.
This, however, is one area where eventually Epic Games shines — they take a much lower cut and if they increase in popularity with gamers then steam might be forced to lower their share.
Generally, the Steam cut is considered “fair” for Indy devs. The benefits of steam (discoverability, massive audience) generate more sales. My Indy dev friends are not upset about the steam cut at all.
This, however, is one area where eventually Epic Games shines — they take a much lower cut and if they increase in popularity with gamers then steam might be forced to lower their share.