Yeah, I just floated the demo idea in case it was possible to do it quick, in like thirty minutes or something, otherwise I don't think it'd be worth the trouble. I wouldn't discount the idea of new people coming across the game, though, especially if your other titles take off (which is the hope) and people look into your previous works.
I definitely don't think you should go lower than $9.99 for your price, though. As the video in the link said, it's easier to go down in price than it is to go up, and Steam sales offer plenty of chances to offer deep discounts for your games.
As for the OST, if you're thinking of making it cost more than $10, I think including concept art in a "digital artbook" format and such could be a good idea to sweeten the deal (that is, if you feel comfortable revisiting your old art and such). Labeling it a "Deluxe Edition" bundle that costs ~$25 might entice more people than just "Game + Soundtrack".
I definitely don't think you should go lower than $9.99 for your price, though. As the video in the link said, it's easier to go down in price than it is to go up, and Steam sales offer plenty of chances to offer deep discounts for your games.
As for the OST, if you're thinking of making it cost more than $10, I think including concept art in a "digital artbook" format and such could be a good idea to sweeten the deal (that is, if you feel comfortable revisiting your old art and such). Labeling it a "Deluxe Edition" bundle that costs ~$25 might entice more people than just "Game + Soundtrack".