No, you've read it wrong. $320m of that $355m is the revenue from selling 21 million copies of the game (and doesn't adjust for discounted copies).
The 10% cut of transactions figure ($21m) is based on how much money they'd make if all the items on csgobackpack.net were sold at market value. But the actual fraction of those items which changed hands would be much smaller.
Valve is rolling in money from its cut of transactions but these numbers are misguided.
The 10% cut of transactions figure ($21m) is based on how much money they'd make if all the items on csgobackpack.net were sold at market value. But the actual fraction of those items which changed hands would be much smaller.
Valve is rolling in money from its cut of transactions but these numbers are misguided.