Got this offer by email from Barclays on the Aviator card, did not understand how it works, different than Citi roundup.
Turn your change into more AAdvantage® miles
With the new Flight CentsTM benefit on your AAdvantage® Aviator® Mastercard®, you can easily get a change of scenery with more AAdvantage® miles on your purchases. Flight CentsTM allows you to round up your purchases to the nearest dollar to get more AAdvantage® miles.
Here’s how it works:
• Determine the maximum amount you want to round up each statement period and set that as your threshold.
• You will get a ½ AAdvantage® mile for every 1 cent that is rounded up.
Total Miles
Morning coffee | Amount rounded up | Amount charged | Miles Acquired
WITHOUT FLIGHT CENTS[TM]
WITH FLIGHT CENTS[TM]