Sanctum $2.48 Save 75%

[WARNING: The following post contains a high level of sarcasm. Viewer discretion is advised.]

Well guys today I was on internets, :YouDontSay: when suddenly a wild add appears of Sanctum at $2.48, Im new here so don't know much about give my moneyz for games, I use to play pirated games then Steam shoot me an arrow on the knee, and im legit now, so I see this offer but was on a page called greenman gamming, through 4 hours of intense investigation, I found that is a platform just like steam, but the page has some cool offers even better than steam, but I don't kinda trust the page, and i definitely not change steam for other similar platform, Im in luv with Steam, so my question is if anyone know about this page? I can buy the game there an activated on Steam? Or just definitely block the page forever to not be tented again.