From now until 28 Apr 18, you can receive up to 115000 bonus miles when your purchase the cap of 150000 miles.
This means you’ll receive a total of 265000 miles for as low as 1.8 US cents per mile!
Do note that accounts of less than 30 days old are not eligible to purchase miles, so there’s still time to sign up for an account and make your purchase before the sale ends.
Also bear in mind that you are able to hold award seats for up to 5 days while you decide on making your purchase, just in case you change your mind. AAdvantage miles are excellent for redemptions on Qantas First Class, at only 50000 miles per person per way between Singapore and Australia.