Like everyone else, I get distracted and forget to do this. Then I look out at my car while standing at the register. Naturally, the numbers are not visible from this location...
I remember reading a melodrama from the 1800s where the protagonist, a failed writer, makes a deal with the devil to have a bestselling book. In the second half he becomes wildly successful, but is tortured by the knowledge that he is genuinely mediocre. It always stuck with me. Reminds me of people buying Likes.
Moderate condition, ex-library so there are stamps and labels. However it's about 120 years old and a first edition. There was one for sale last year, now there are none for sale anywhere in the world, AFAIK. It was the first book of its genre and is recognised as influencing the later masters. Think Poe influencing Conan Doyle. I'm reluctant to mention the details because I don't want it showing up in a search. Sorry to be so cagey! I'd be annoyed by this post myself if I read it.
I buy and sell used books. I came across one nondescript worn hardback in a box and for some reason decided to research it. It's worth five figures. Cost about 25c.
This is a family site. Take your hardcore pornography elsewhere!