I'm afraid all reputable providers have chargeback fees.

That's something banks charge from the merchant [1] so it doesn't make sense for the provider to take that risk. Provider does add a bit of extra to cover their side of the work, no idea how much.

[1] https://support.braintreepayments.com/customer/portal/articl...

Sorry, I haven't made myself clear - I meant that question in terms of "this is too good to be true, right?".

Ah no, my English sucks, had no idea what "does not levy" meant :)