I assume all of the 500k sellers are scammers, that's not even how much VIP costs retail, so they would be losing money selling for that low.
I am a TriBot Moderator and Verified Reseller, I can sell to you for 1.5M OSR if you wish. I have many other customers who gladly buy at that price.
Careful when buying from other/random users, verified resellers are the safest.