The game is not sold in stores. It is sold on a game selling company called steam. You would need to make a account on steam and buy it there.
No. Go buy it at steam...
Buy Garry's mod 10 off of steam.
You Do Not Get Garrys Mod Serials, You Buy it Off Of Steam Which can be found at steampowered.com its usually about 21 United States Dollars
There is no "Disk version" for garry's mod, you have to buy it from Steam
Buy it off Steam, easy.
it's a mod, therefore not in stores but my friend claimed he saw it in gamestop but i really really doubt it you can buy it on steam for $10 via paypal or credit card. (get garrys mod 10 not 9!!! i cant stress this enough.)
You Haveto Buy It. On Steam Its 6.99
You can buy it at the Steam Store. Check the related link.
Install steam (steampowered.com) and you can buy it on there. $10 and you get automatic updates through steam and servers.
technically yes, there were a few updates it is still called Garrys mod 10 though
Garry's Mod 10
Yes, garry's mod will work with portal and you will have all the HL2 stuff.