UA: Year-end flash sale

Deal Link: https://buymiles.mileageplus.com/united/index_en.html
Expiry: Dec 30, 2015

You can save up to 50% off, if you buy United Airline miles before Dec 30, 2015. You can use those miles on award travel, upgrades and more. UA is selling miles more frequently than before, which is not a good sign...

• Buy 5,000 – 19,000 miles, save 15% 
• Buy 20,000 – 49,000 miles, save 25% 
• Buy 50,000 – 149,000 miles, save 35% 
• Buy 150,000 miles, save 50% 

Note: you need to buy 150000 miles (USD $2625) for this 50% off, which is still a lot of money. I recommend that you should only buy it if you really need to. BTW, GST/HST is charged to Canadian residents.