While it’s not much of an offer, United has announced a promotion on the purchase of MileagePlus miles through December 31, 2013. You can purchase up to 100,000 MileagePlus miles per account per calendar year, though even with the promotion you’re still looking at paying ~2.8 cents per mile. So while it’s by no means a rate at which I’d speculatively buy miles, I guess it’s still better than the normal price of close to four cents per mile. I wouldn’t be surprised, however, if we see a bigger bonus before the end of the year, maybe some number of bonus miles in addition to the 25% discount.
(Tip of the hat to LoyaltyLobby)