I have PS, PSII, PSIII, Generations 1 and 2 and Collection. I got all the games for cheap years ago. PS being the most expensive at $30(Loose and got it this year) I want to buy PSIV on the Gen but I think I may just get the Sega Collection on PS3 instead because its $15 and the cartridge is $30+ I am in a budget and not only does all 4 PS games come in the collection but also other classic Sega games. I personally think its the best way to buy PS games. Just my personal opinion.