how do you know how much he/she paid?
It is $1.20 USD the minimum price, but you can pay more if you want, go check next to the price, it says "or more" and when you click on the Buy button, you can select the amount (3$, 5$, etc.)
I did pay $1.20 USD in all honestly. But that is a good point, others could of paid even more and now don't even get a Steam key.
