Originally Posted by
Disco Volante
I imagine Raffles is responding to the OP,
Yes, but my whole point is, how does Raffles know how hard it is for the OP to spend £x per annum on his card? It is qutie possible that Raffles knows more about the OP's personal circumstances that was apparent to me, of course.
rather than waffling on about the credit card market in Brazil
The OP did acually make a comment about the card being not accepted in some places, which I was trying to address, admittedly by way of a roundabout example. If that issue hadn't been raised in the very first sentence of this thread, then perhaps I wouldn't have "waffled on" about it.

To spell it out a bit more, it definitely isn't the case that Amex is only accepted widely in first-world/affluent countries, or that Amex is always harder to use that Visa or Mastercard.