Hello! I currently have 6 Dota 2 Game Access. I'm willing to sell them cheap, but I'm not looking to get ripped off either. About $25 worth of CE (9k CE?) would be fine. Send me a message/add me and we'll further discuss the price. I'm willing to Haggle.
Cheers!
Seoul-Reaper
If your invites DON'T have red "not available in China" text they're worth 1-2 TF2 Keys if you can find a Chinese player. Otherwise they're completely worthless since everyone gives them out for free (there's even a legit bot account you can add that has thousands of them). I think the most they go for is 1 TF2 weapon for 8 invites.