I sell my old books on Amazon. For the latest book, I noticed that Amazon took a 44% cut from my $20 book. That’s pretty steep! I wrote to support and they said, “Yup, a 44% fee sounds about right. Suck it.”
A few years ago, fees were more like 15%. I somehow doubt that the internet is getting more expensive.
Bah! where else can I sell used books?