Any really cheap place to buy D2+Expansion from?

Hey! So I've been watching D2 streams the last couple days and I think I want to try the game out cause it looks such an awesome one, something that both D3 and PoE is missing for me at the moment. The problem is I spent basically all the money I had on black friday so I can't afford it from the official site. So I'm looking for a cheap place to buy it. Do you guys know one? Thanks!