United is selling miles with up to a 100% bonus through August 15.

This is the cheapest I see United selling miles but it’s certainly not the only time they’re available at this price, for instance here and here.

You have to buy 30,000 or more miles, though, to get this price and full bonus.

They’re going to require you to log into your MileagePlus account to see the bonus offer, which has led some folks to wonder if the offer is targeted, but it doesn’t appear to be.

You can buy up to 150,000 total miles (75,000 plus 75,000 bonus) for $2821.88 with tax for a per-mile cost of 1.88 cents. (Someone still needs to go through the hassle of getting a tax refund when using the miles for something other than domestic airfare.)

This is a little more than what I value the miles at. But it’s closer than it’s ever been. I’m not going to buy the miles speculatively, but I would certainly buy to top off an account to the level needed for an award that I’d be interested in booking within the next few months.

Purchases are processed by Points.com so airline fee credits and credit card bonuses for airline spend will not apply.

This promotion has an interesting sales approach, adding on a sweepstakes as well. They’ll draw three winners out of the promotion to award additional miles to.

If you want to enter the sweepstakes without buying miles:

mail a postcard with your first and last name, mailing address, phone number and email address and a reference to the “Points.com Inc. MileagePlus Miles Sweepstakes” to Points, 351 California Street, Suite 1210, San Francisco, CA 94108.

Terms and conditions of 100% Bonus:

Promotional offer valid until 11:59 p.m. CDT on August 15, 2016.

Miles are available in increments of 1,000 up to a maximum of 75,000 miles.

Bonus Miles will be credited to the recipient’s account when the transaction is complete.

Bonus miles count towards the 150,000 mile annual limit per account.

Purchase up to 150,000 miles per account per calendar year.

Credit card will be billed immediately upon purchase.

Mileage rates and other fees and offer terms are subject to change.

Allow 48 hours for miles to process and post to your MileagePlus account.

Miles are nonrefundable.

Purchased miles do not count toward MileagePlus Premier® status.

All MileagePlus Program Rules and terms and conditions apply.

GST/HST is charged to Canadian residents.

Powered by Points to purchase United MileagePlus miles. Transaction will appear as ‘Points United Miles’.