Looks like Amazon has pricematched all the current Steam deals. The games in this list are all Steamworks so you’ll have to activate them on Steam anyway. Might be a good change to use any store credit you have.
Oh So Fine Bundle = $14.99 – Comes with:
Costume Quest = $7.49
Psychonauts = $4.99
Stacking = $7.49
Risen 2 : Dark Waters = $16.99
Babel Rising = $4.99