Streets Of Rage 3 seems to cost a bomb and is hard work to get hold of in the U.K., don't know how hard it is to get hold of in the U.S. though.
I just bought loose PAL copies of Phantasy Star 2 and 3 from a US seller, and she had a loose PAL SOR 3 cart for $30.
How someone in the states could get loose PAL MD games is curious. SOR3 is uncommon, but attracts daff prices. Joe Montana is better on the SMS, and Third World War is awesome!
37-ish more games to go for the Genesis -- definate wants here.