Efficiency.
The company behind the giant book “donation” bins that were ubiquitous for a while around here used a massive sorting operation to scan and look up book values, to decide to decide what to do with them
The books collected in the bins are sorted into three groups: about one-quarter are sold through online sites like Amazon, about half are pulped, and the final one-quarter is given to non-profits.
It is a multi-million dollar operation you can’t profitably compete with.
