Where can I get old games cheap?

[Jassi]

Anyone know of a good place to get old games cheap? My list is increasing day by day but I haven't found a good source yet. I don't mind buying used as long as they work and I can play online (if its supported).

List so far:
Half Life (1 + Expansions)
Warcraft (1,2&3 + all Expansions)
Homeworld (entire series)
C&C Red Alert 2 (and the games and expansions that followed)

Edit - I tried Ebay, the shipping makes most deals cold. Also, if there are any games I should try, please let me know

 

[alm4rr]

Im ebay bidding on some old games now,,, should get it for less than $10 shipped... I got others for @15
Hot deals forum ahd some recent deal at gogamer.com for HL2 I think

 

[PrayForDeath]

Valve are selling HL1 with all of its expansions for just 15$. Go to their website for more details.
I'd never buy a used game if I wanted to play online, since many games will say your CD key is already in use.
There's also a package for all C&C games at retail stores, I think it was selling for around 20$.

 

[igowerf]

C&C is definitely availale for cheap in the stores now. WC3 is still pretty big so I don't think the price has gone down very much yet. Your best bet would be to check out eBay and the FSFT forum here. I actually buy a good amount of games from FSFT.

 

[Fenixgoon]

marathon 1 2 and 3... they're all free!

 

[homercles337]

I will sell you my copy of HL. I dont have the manual or anything, just the original CD and jewel case with inserts.