United just emailed out a targeted offer to purchase up to 100K miles at 30% off of the usual price. This offer is only until 11.59PM CDT on April 8. Note that there is no public link for this offer.
You can get the maximum 30% discount IF you buy more than 30K miles.
The price of the United mile, when purchased in greater than 30K miles lot, is 2.63 cents each. United has been selling unlimited award miles for 2.1 cents by taking advantage of the Award/Premier Accelerator. You can read that article here.
If you are not sure if buying miles makes sense for you, there is a piece that I wrote about this subject “When Does It Makes Sense To Buy Airline Miles”.
This is not a good offer to purchase United miles and I wouldn’t encourage anyone to purchase at this prices unless you urgently need to for international business or first class award.