StackSocial offers the Pay What You Want: Back-End Developer 8-Course Bundle for whatever you want to pay. The minimum price is $1.01, which buys you only two of the courses; however, if you opt to pay the average (at the time of this posting it's $9.32), you'll receive all 8 courses. Assuming you pay the average, that's $981 off and the lowest price we could find. (The average price was $2 less last week.) Note that 10% of your contribution will be donated to your choice of charity. (Choose from Child's Play, World Wildlife Fund, or Creative Commons.) Courses subjects include PHP, Python, and Ruby programming.

Update: The average price has increased to $9.51.