After I placed my first bid on PS2 games, I read a lot of negative reviews and I was really scared that the same would happen to me. After I won auction, I received my shipment very fast. When I opened package, games were as described in the auction. Most games were new and unopened. All were clean and even open ones are in great, like new condition. Only disappointment was that 48 out of 200 games are exactly the same. Other 152 is good mix.
Now about Liquidation.com. I faxed them Re-seller Certificate but they still charged me sales tax. They claim they never received it. I faxed twice but still didn't get credit for the sales tax I paid for. When I called them, customer service rep (the female) gave me not very clear answer what will happen that 10 something dollar sales tax. Later I spoke to gentlemen who was more professional and asked me to fax the document again. I did fax them again but I have not heard form them.
I guess, it depends on seller not on liquidation.com what kind of product you receive. However, Liquidation.com customer service it not so great.