Seems like a scam. How can you make a profit selling these keys for 1$, if the profitability is as high as you suggest? Could you clarify a bit more what the odds are of getting games such as GTA/PUBG, %-wise?
Or are you giving out region-locked/hacked/scammed keys?
It's really simple to understand. Creators sell us their games for very cheap (usually from non-popular games) because they want to promote them. The prices are usually cheap.
From our profits in selling those keys, we decided to add some popular games to our stock (distributed randomly) for getting more people interested in buying our keys and specially, the popular games we added on the stock.
This is the way our service works.
PD: NO ILLEGAL KEYS ARE SOLD. ALL OUR KEYS ARE 100% LEGAL AND OFFICIAL FROM STEAM