Amazon Needs Math Lessons

Brian shopped for a webcam on Amazon and faced this confounding pre-checkout screen.

He writes:

It’s wrong on so many levels. First they say regular price is 79.99 and you get a discount of $60.00. Somehow the price comes out to $39.99 and they count that as 50% off. When added to cart, it says 99.00 is the regular price. I’m so confused.

Hopefully Brian nabbed the miscalculated deal at $39.99, because last we checked the item had shot back up to $99.99.