Sorry for the wait, was away all weekend:
Nu Gundam - Taking the "average" prices from the Guide, here's what I have:
Armaldo - SS - $12
Gyarados - Dragon - $4
Team Aqua's Cacnea - TATM - $3
Swalot - HL - $3
Wartortle - FRLG - $3
Dark Houndoom - TRR - $3
Grumpig - Emerald - $3
Bayleef - Unseen Forces - $2
Metang - Delta Species - $5
The only one I don't think is too accurate is the Armaldo, they're going for cheaper on eBay, the lowest there is $8. If you need one of each I can do $30 for all.
lugiaseeker - I actually do have just one, it's from Dragon.