Originally Posted by
SunLover
If you use a Chase co-branded UA card that earns double miles for UA spend you will actually get 20,900 miles.
I would not buy UA RDM's unless you are going to redeem them immediately.
SunLover
In Mexico we do not have Chase unfortunately

And on some existing reservations I can buy miles for 2,1 CPM so this is not such a good offer at all...