The money
A fee lower than the cost of taking a card
A card payment costs about 2.9% plus US$0.30 for a US card, which is more than our whole fee on most games. Rather than hide that inside a bigger percentage, we pass it to you at exactly what our payment provider charges, and take 1.987% on top.
That's honest, and it's still the best deal in games: on a US$20 sale you receive about US$18.72, where a 30% store pays US$14.00.