I guess there is a difference of what I would pay, what I think it will be worth, and what TWI should charge.
Quite honestly, I would pay $59 for the game. If it is as good as ROOST (or close to it), it will be worth upwards of $100. However, I really wouldn't pay that much for it, just because it would be obnoxious if TWI charges that much. However, we know they won't
Realistically, they should probably charge $39 - $49 as the regular price, with perhaps a preorder sale and the usual special Steam sales. I think the arguments made about indie and budget games, and Steam distribution will put ROHOS price right around there. Higher than that and I think you might scare away some of that new market that TWI is hoping to grab; they would rather grab a more mainstream title first at that price. Of course, that is until they hear just how awesome the game is.