Factory sealed NES games

[Gameguy]

Someone local to me is looking for sealed games, and since I have some I figured I'd offer them up. I just don't know what to ask for them since I don't really collect sealed games. They're all in pretty good condition. Any help would be appreciated. :)

NES Play Action Football
The Ultimate Stuntman
Faxanadu
Wrath of the Black Manta
Super C

[aaron7]

NES Play Action Football $10 tops
The Ultimate Stuntman $20-25
Faxanadu $30-40
Wrath of the Black Manta $25-30
Super C $100-120

[Gameguy]

I thought they'd be worth more. Oh well, at least I know better now. Thanks.