TF2 Trading Cards worth?

Market prices right now:

• Scout: $0.42
• Sniper: $0.46
• Soldier: $0.47
• Pyro: $0.50

Your Grand total cost (Inc 2x Scout):

• $2.27

Each one is going at about £0.29-£0.32 each, which is about $0.40-$0.45.

But if I sell them on the market, once the fees are cut, how much will I have left from the $2.27 (5 cards total according to Boxanata's reply)?

I'm selling them for 1,000,003 dollar each or trading for a Fortix.

On top of all that, it's basically free money (or cosmetics if you make badges). They are dropped from you playing a set number of games and Valve says they will be adding more. As long as they don't change the prices of the games they sell because of this, it's icing on a (so far) very awesome cake. Except for F2P games, which drop cards based on how much you spend in thier shops (only DOTA2 and TF2 so far), but if you already regularly shop through them then, again, icing on a sweet cake.

If you want Background and emotion . worth is nice :)

Can you get TF2 cards without buying something in the store? What if you bought it before the game was F2P?