it just occured to me that someone could really make money off of playing tf2 now.
One weapon is .5 scrap metal
9 scrap metal is 1 refined, 18 weapons
1 refined is 43 cents
You find one weapon per hour at a limit at 11 per week
It takes 18 hours over the course of two weeks to make $0.43 in TF2
So no you really can't make money off of TF2 unless you use it as a stock market.
How much are Series 40 Crates?
10 keys. however they're much cheaper if you buy them through reality money