Worth of some NES games

My NES has been broken for a long time, so I can't use the old carts anymore. Plus, all the old games I have that I want to play are available on Wii's Virtual Console, collection re-releases, etc. So, I was thinking of selling them, but I don't know how much they're all worth. Can you enlighten me? Here's the list:

Super Mario Bros./Duck Hunt Combo Cartridge (w/ Zapper)

SMB 2

SMB 3

Mega Man 2

Mega Man 6

Mike Tyson's Punch-Out!! (original version)

TMNT

Excitebike

Dragon Warrior

(I might have more, but the cartridge box isn't in front of me atm.)

Honestly, not that much, probably like 5 a game, the only one that is sorta rare would be Mega Man 6 which you could get up to maybe 20 for it. NES games arent worth that much in general, I just decided to keep all mine.Full-Throttle

That's what I was thinking. Maybe I should keep sitting on them for a while...

You could probably get 20-30 for MM2 and MM6.

Then you could coax someone for 15-50 for DW.

Everything else...well you could always package the deal with SMB3. That usually gets people interested.