New to trading, is there a database for prices of items?  I have been playing tf2 for about 3 weeks now and upgraded to premium yesterday and bought a fall key because I had no idea what to buy, used it on my crate and got a warpig hat which was level 86 if this makes any difference. I just wondered if there is any guides out there for newbs like me :). I didn't know a game which characters can place hats on their heads could have such an economy, cheers for reading. 