ohhh man. you shouldn't have told me that.

You're now on the lookout for:
#00 Optimus Prime
#07 Sideswipe


Depending on each figure, the price varies. Megatron, Soundwave, Optimus Prime, and Starscream are the most desirable of the bunch.

Soundwave retailed for $60, now goes for $100+ on eBay
Prime retailed for $70, now goes for $150+ on eBay
Megatron retailed @ $70, now goes for $140+ on eBay
Starscream retailed @ $45, now goes for $60 to $70 on eBay

There are newer figures that are in extremely high demand too.

Soundblaster retailed for $65, now goes for $90ish and rising
The Inseticons retailed for $38, now goes for $50ish and rising