Didn't pay anything to any F2P I've played. The only letdown is that they all are really P2W, so spent much more time on games I've bought, it's more rewarding.

$0.00

0€

$0 :)

Zero.

not a shit

Nothing, I don't play F2P

20€ - Orange Box

0$

I don't pay for "FREE" 2 play games :D

Nothing

TF2 - $4.99

0

Bought a $10 Farmville cash card at Walmart for my mother in law. Does that count?

Otherwise, no... I don't pay to play free games. If I can't get ahead anymore by grinding, I move on to some more rewarding game. It's not like there's no choices out there.

Spiral knights DLC - £2.69

That's it.

tf2 37 cents

over 1k usd for items/premiums in knights online. still ended with nice profit after i sold all my gear

$1 on TF2. And a friend gave me the money.

champions online 4 € for 2 months premium

10€ on Tribes Ascend. Not going to spend more on F2P because it is the cancer that is killing potentially good games.

Probably around 1k in tf2 and $500 in LoL.

I put like, ten bucks into Realm of the Mad God to buy a second character slot, that's about the extent of my F2P game spending.

Haven't bought anything in years. I've always wanted to grab some TF2 keys but I procrastinate too much.
I've donated to private Ragnarok Online servers before (Pay-2-Win; before I knew better). I've also bought extra storage panels in Guild Wars cause the limit they give you is just way too low.

20$ for tf2 before it was F2P. I am still mad at you vavle!!!!!

0€

$0. And I'm pretty sure it's going to stay that way.