Through Friday, November 17, 2017, Choice Privileges is offering a 30% discount on the purchase of points. The promotion is valid as long as you buy at least 5,000 points in one transaction, and you can buy at most 50,000 points through this promotion. If you buy 50,000 points it would cost you $385USD, which is a cost of 0.77 US cents per point.
Choice is running a coinciding promo where 5000 Choice points can be converted to 2500 United miles.
United has another coinciding promo where you get a bonus 30% points when converting hotel points to United miles. Up to a maximum of 25,000 bonus miles. See https://promotions.united.com/offers/p2m
Effectively if you combine all the promos together you can buy 32,500 United points for $385USD.
Still worthwhile even with recent united devaluation?