Looks like anyone publishing remotely technical topics didn't buy into the program. I've been a prime member since the beginning and during the first few years

Looks like anyone publishing remotely technical topics didn't buy into the program. I've been a prime member since the beginning and during the first few years I was probably buying 2 or more books per week. 9 matches for me, only one that I'd want to have a digital copy of for reference and all offered at a discount as they were already very inexpensive on kindle. None free. Disappointing. Still love that Amazon is trying to push this, but looks like adoption will be slow.