I paid for both the silver and the black modded macs at the price he requested. However I am doing some research as to what "the market" perceives the actual value of the macs to be and will be asking for the difference less shipping to be returned to me after the conclusion of my research.

I really like these macs as you hardly come by modded macs that are for sale (at least in my experience) which is why I paid for them (didn't want them to go to the junkyard!) but I also don't like the idea of being ripped off, knock on wood everything will turn out ok...