Games at very cheap rate and in good condition in US

Hi

I am from India and here PS 3 games are very costly and main thing is i can't get used games within India...

But good news is my colleague is coming india (He is from US)...
I want to buy these games

Virtual Tennis 4 Or Top Spin 4(Don't know which one is better)
London 2012 Olympic
The Fight
Sports Champions 2
Carnival Island

So is there any site other than Amazon where i can find Cheap Games and in very good condition in US.. so that he can buy and bring these for me... :)