Where?!?

1 cent is not an option?

Go on reddit

r/sharedota usually has a bunch of keys.

its easier to find right after a key surge (valve sends them out in "waves") but not hard to find regardless.

add me and i give you one? T_T

If you want one you can add me

I don't know, but apparently there's a good deal being offered here.

There are bots on steam that you add as a friend and type 'givedota' and they'll give you one. Try that?

Done:) thanks ^^

http://steamcommunity.com/id/dota2bot he will give you ;)