$1.99 for Change Is the Only Constant eBook

Amazon is offering the Kindle edition of Change Is the Only Constant for $1.99, down from its original list price of $15.

This represents a significant price drop of approximately 87%, saving you about $13.01. The deal is on a popular math book that explores calculus in an engaging way, and the discount makes this a particularly attractive offer for readers interested in math, literature, or general knowledge.

The deal is easy to redeem through Amazon, and the pricing is notably lower than the original. Given the percentage discount and the popularity of the author, this deal qualifies as alert-worthy.