United Airlines sent out an email yesterday to targeted MileagePlus members offering them Premier Qualifying Miles and Segments at a price.
United Airlines usually extends these offers late in the year and you can always buy Premier Qualifying miles using the Award accelerator that can be applied to any itinerary ticketed on United including award ones.
You can check your targeted offer here.
Note that you still need to reach the required Premier Qualifying Dollar requirement and the purchase price of this sale won’t count towards it.
My personal account was not eligible for this offer, although I would not had participated anyway. The prices are too high.
You are better off buying discounted business class ticket during a sale and have a mini vacation in Europe. This can perhaps make sense for someone who is time constrained.