Sometimes you search everywhere for a book you want. It’s out of print. Nobody’s selling it online. You scour the second-hand bookshops and the proprietors haven’t even heard of it.
And sometimes you find a brand new copy of a book you didn’t even know you wanted in a telephone box book swap that you only looked at because you had twenty minutes before your train. I can only assume that this copy was an unwanted present, because I’m pretty sure that I’m the first person to have read it. Lucky for me.