For those with AMEX Plat, don't forget the current earn double MR for every dollar spent promo Apr 21st to July 20 (6 MR on dinning, 4 MR on travel, 2 MR on all other purchases). Unfortunately this Aeroplan miles purchase will not qualify as travel, hence it'll be 2 MR / dollar spent.

So if I purchase 500,000, I'll end up with 1,075,000 (250k x 2 plus 115% bonus) at 1.4c/mile + 13% Ontario tax, equates to C$17k or C$1.6c/mile after tax and will also give me 34k MR (double promo).

C$17k spend would give me few Asia 2 / Europe mini-RTWs: 5 x F @ 215k or almost 7 x J @ 155k. Approx. C$3.4k/F or C$2.4k/J.