So why not have rent be the cost of the lowest price payment method, with an extra charge for paying with a card being the cost of the card fee minus the cost of the fee with the lowest cost option? Then there's a "free" option where you're paying the price that you were quoted, or the option to pay a convenience charge for using a card? Telling someone rent is $X when rent is actually $X + $Y is ridiculous.
And I'm not sure your point on "a very American attitude". I live in America, so... yes? When I tell someone my address, they don't look down their nose and say "that's a very American address". Of course it's American. That's where I live. Contrary to some opinions, American things aren't always automatically wrong just because they're American. I'm sure if I lived in Belgium I would pay tax and VAT and credit card processing fees and think nothing of it. But I don't live in Belgium. I'd have the same reaction if my landlord asked me to pay rent in Yen just because there was a favorable exchange rate for him.
My point is that, Americans expect paying with credit card to be the same as paying with cash. In a lot of other nations, that expectation does not exist.
And you're right- a better way to do it is to have the lowest fee added to the cost.
And I'm not sure your point on "a very American attitude". I live in America, so... yes? When I tell someone my address, they don't look down their nose and say "that's a very American address". Of course it's American. That's where I live. Contrary to some opinions, American things aren't always automatically wrong just because they're American. I'm sure if I lived in Belgium I would pay tax and VAT and credit card processing fees and think nothing of it. But I don't live in Belgium. I'd have the same reaction if my landlord asked me to pay rent in Yen just because there was a favorable exchange rate for him.