I have made a list with some reliable game serial stores:

Storename	Reliability	Information
CDkey-Game	doubtful	None
CDkeysHere	Reliable	FAQ
CDKeyHouse	Reliable	FAQ
CDKeys	doubtful	FAQ
CDKeysDiscount	Reliable	FAQ
CDKeysMarket	Unknown	None
CDKeyStore	Unknown	FAQ
CJS-CDkeys	doubtful	FAQ
Culgame.com	Reliable	FAQ
Direct2Drive	Reliable	FAQ
DirectGameKeys	doubtful	FAQ
EzyKey	Reliable	FAQ
GameCard	Reliable	FAQ
Gama-Gama	Reliable	FAQ
G2play	Reliable	FAQ
GameCard.mobie	Reliable	FAQ
GameKey	Reliable	FAQ
GamekeyDistrict	Reliable	FAQ
Gamekeys4sale	Unknown	None
GamerKeys	Reliable	FAQ
Gamekeyzone.net/	Reliable	FAQ
GGKeys	doubtful	Offline
GreenManGaming	Reliable	FAQ
Intkeys	Reliable	FAQ
Keys4me	Reliable	FORUM
Keysoutlet.com	Reliable	None
LowPricedGaming.com	Reliable	FORUM
IntKeys	Reliable	FAQ
OnlineKeyStore	Reliable	FAQ
Steamkeyshop	Unknown	FAQ
Yuplay.com	Unknown	FAQ
Yuplay.ru	Reliable	FAQ

A collection of price comparison sites:

• CDkey Prices
• gamekeyfinder.de
• DLCompare

Happy gaming!

I need to know which is the cheapest and fastest for key buying for games on this list?

Nice list!

Thanks man !