LearnDash is my favorite WordPress LMS because of its extensibility and great user interface with any theme.
LearnDash does offer a Black Friday discount, but it is very limited.
This year they are offering a 50% discount on all plans
Coupon code: BF2020 (for Nov. 27th, 7AM-4PM EST Only)
Coupon code: CM2020 (for Nov. 30th, 7AM-4PM EST Only)
These sales are never extended or brought back, so make sure you’re available during actual Black Friday or Cyber Monday to save big on LearnDash!