Products rates difference can earn you a huge amount of Money

In the past recent days i was getting myself able to buy a game(Counter Strike: Global Offensive). And then i waited for Steam winter sale to be started so that i can buy it on economic rates.

But when i shared this to my friend, he suggested me to buy it from a different website named KeysTeez(keysteez.pk). The reason was even after winter sale of Steam this game was being sold at the price of 10.04$(33% off). And this Pakistani website was offering it at 750 rupees only(almost 7 dollars). I don't know why but it gives a lot of benefit to this website and can attract all the cs:go recent gamers to this website instead of steam.

The point is, if somebody wants to invest, he/she can earn a lot of money through buying keys from this website and selling it on multiple forums(social media, blogs, websites etc.)
This is my analysis, you can give your opinion too.
P.S: I am not doing marketing for Keysteez. :D