Oh Items worth 300 USD, I thought u won actual money 
me too I thought he won real money , it totally suprised me, but when I heard that he won them on a game 
They can easily be converted to money.
Example:
OP>Paypal>A nice expensive beer
Yes, but converting that to real money has currency manipulation by the seller

They might be 300$ worth of ingame items, but you are probably gonna sell them for 200 $