New Vegas is $10 at Best Buy right now, and $15 for the daily deal on Steam. I really want the expansions, which are $2.50 each. If I buy the game at Best Buy, can I import it into steam and get the expansions for the steam price?

New Vegas uses Steam regardless of whether its retail or not.

When you install it from the disk, it'll be installed to Steam. (Assuming you get it right, as sometimes a mistake results in it downloading and installing via Steam instead)

dont buy it from best buy just buy it from steam today cuase its 15 dollars and both dlcs are 3 so you can new vegas and both dlcs for 20 bucks i like steam deals :fallout:

No matter where you buy you must install it with Steam. And Steam is the only place where you can buy the DLCs.