Are there ever sales on lifetime?

[Mirkwood]

Hey folks, any sales on lifetime membership coming up?

[Ginatto]

On youtube I read:
Hey Everyone! Just a side note, we're having a SALE on lifetime right now :) It's $ 10 off (It's September 24, 2014 today for anyone who finds this post in 3 years and yells at us for not having a sale!)
link: https://www.youtube.com/watch?v=8WxFOmEVmcQ

How can I get this $ 10 discount to buy lifetime premium?