Trade in Values

Just yesterday i went to eb Games to trade in at least twenty original xbox games and i only got seventeen dollars in store credit. I dont play those games any more but some of them still had the seal on them and iexpected at least thirty to fourty dollars in store credit. The guy was giving me thirteen cents up to two dollars and eighteen cents so i asked him how much money will i get if i trade in my original xbox, and he said around twenty dollars if it 's in good condition. So i traded the games in and got ncaa 09, but i still paid around fourty-five dollars. Im surprised they did'nt give me a half of penny for the games. My cousin got sixty dollars in store credit for about thirty ps2 and gamecube games put together.