That's not what I said and you completely failed to address the question. Did the servicer make 10 times as much as you from each transaction? If you bought a widget for $67 dollars from a supplier and then sold it to a customer for $100, you then sent $30 off to a payment processor and only made $3 from the entire transaction?
So, on a transaction where I sold something for $300, did the processor make $3,000 dollars? No... Am I misunderstanding your rant? If I am, apologies...
From what I remember, American Express was the most expensive. It was easily double the others, and their 'card not present' fees were,as I remember, even higher. We were paying a 'not used' fee of around $100. And we were also charged a monthly fee by the cards, but if you processed any of their cards, they usually waved the fee.
I would think that the most we paid was close to 22%, not counting fees. However, we had clients that would only pay via credit card, and one of the largest clients paid on their business American Express, yippee, but we instituted an 'Amex Fee', and they gladly paid it.
Is Apple right to charge for their 'service'? Someone has to, and try that argument at a toll booth. But since Apple has now allowed third party payment systems to be used, the argument is moot, isn't it?