Figured may as well still post this up for those that are more comfortable
buying from the Mac App Store even though Amazon and Gamersgate have the
same deal going on.
Neverwinter Nights 2 is 95% off on the Mac App Store: http://itunes.apple.com/us/app/neverwinter-nights-2/id465155410
No reason not to buy a copy now with its price being this low.