I was thinkin like 150/160... I mean, 15 for RE 0/remake, 20 for tos, 30 for re 4, 32 for the primes, and 45 for the system, I think that was 157 not including the mem card (which you didn't specify size)
As a lot I wouldn't pay over $110. $50 for the cube, $40 for RE4 and MP2 and tell him you aren't interested in the rest of it but you'll give him an extra $20 for it.