Hilton HHonors has launched targeted offers for buying points between November 17 – December 15, 2015.
You can buy up to 80,000 Hilton HHonors points every calendar year before any bonuses (Hilton usually advertises a bonus and not a discount).
You can check your targeted offer here.
Does it make sense to purchase Hilton HHonors points?
If you use them for very expensive or cheap properties point wise, you can have a deal. Also, some Points + Cash redemptions can be a reasonable offer when the cash rates are through the roof.
If you got an offer for 40% or higher discount, then it could be worth contemplating this offer. Hilton HHonors was selling points for all at 100% bonus earlier this year that would be same as 50% discount (but could purchase max 80K points instead of 160K).
Here are the terms and conditions: