Originally Posted by
Efrem
The American Express Platinum card (that's the real Platinum card, not platinum-colored affinity cards that they issue in cooperation with Delta, Hilton, etc.) gives you a discount of up to $2,500 on the second business or first class ticket if you buy it through AmEx. That's way more than the $450 annual fee for the card in the U.S. They have this arrangement with a lot of airlines, though not every airline. If you happen to have that card already or qualify for it, that might make buying the tickets practical.
But what does "up to" mean? For example, can you knock a (second) $3000 business class price down to $500 (by getting a discount of $2500), or is the discount much more meager with lower-end business class prices?
(I'm not saying the OP's business class price would be only $3000 in this case, I'm just asking for clarification of whether the full $2500 amount applies in most cases, or only for the top end of business/first class fares.)