Just been to Thomas Cook to buy the $2000 Amex card with my free $250
The exchange rate today was 1.68 and the card cost £7.50 - it cost £1205.05 in total.
The staff have no idea how long it will be running as, apparently, TC are continually 'swapping and changing the deal'
The assistant I spoke to had used the card herself so was a great help.
I was concerned about what would happen if we either came back with lots of cash still on it

or were unable to go. Apparently you can just use a cash machine here to withdraw what's left on.
Obviously you would get back a lower rate but the $250, in my mind, should cover all eventualities
To get money out of an ATM the cost is around £1.40 a transaction but the cards can be used anywhere - restaurants, attraction tickets etc.
Don't think there's a charge to use them in shops etc though.
I did a Google search last night on the cards and did find someone offering $75 free to apply online - it might have actually been Amex themselves

.
Some of the links were asking for £20 to purchase the card

. According to TC that still stands, with them, if you buy a £500 card, but not with the larger denominations.