HELP my cd key?

anyone can help me ?
i am a green hand of playing games and just play it for several days .
now i want to have my own key but the biggest problem is the far distance from my island home to the mainland ,so i have to buy games in the internet. some days ago i found www.mycdkeysite.com through the google search. the price of their goods make me heartbeating but i am not sure wether they are cheating ? so anyone can tell me it is good or not?

well, idk, there are some ppl out there that try to sell roms just to make money, when they should really be free, it might not be a legal site too, so yet again, you might want to be cautious about this website