How much are these pcgames worth now? (Sims 2)?

Sims 2 is kind of old but not extremely old. If I sold all those games to my friend, I would sell the PC and Stuff games for $30 each and all expansion pack for $20 each. I would say these prices are unbeatable but I say it all depends on the people who sell it. Whether or not, the person who sells is cheap or not. :)