[mr_gibbins]

I went through a phase where I was buying and selling job lots of books in the hope of striking gold (spoiler: you have to go through a LOT of books, and you'll make less than minimum wage). I ended up selling pallets of excess books for pulp - the paper of the books were worth more than the content.

[megameter]

The only books I would really consider saving are those that have survived long enough to be well out of print. It's like software in that sense - the longer it's lasted, the longer it is going to last.