It seems that GOG.com is holding a holiday sale until January, where certain games only cost $3 each, including a bunch of gamesas games such as Fallout 1 + 2, Kingpin, Redneck Rampage 1 + 2, Messiah, MDK 1 + 2, Stonekeep, and a lot more. So if you wanted to pickup a classic gamesas title for the low, now is the time. Their games are compatible with most newer computers too, so that's a plus.

http://www.gog.com/en/catalogue#all_genres/search/gamesas/