They have to do that to compete with day 1 pick up at stores with pre-order. They just started that a couple of days ago, before it was like $5. I did the same thing, looking forward to using my $20 credit to apply to the NV puchase.
Installed KOTOR2 with the restoration mod on Win7 64. So far everything is running fine, fingers crossed. First time playing as a female, will go all the way Darkside and use a party of 2 psycho robots. Should be fun.