I spent $53 on a paperback once, 460 pages. I think it was worth it though. it’s an academic work with quite a few large pictures spread throughout, so it’d be hard to process on a Kindle.

I also spent $30 on a hardcover of Basic Economics, which is honestly a steal for the 600 pages that you get.

I guess it depends on how much content you get. I don’t care much for hardcover vs paperback. If anything the latter is lighter and easier to handle.

Keep in mind that you’re going to get highly skewed answers from this subreddit. I’d wager that it’s probably around five. Most adults are completely burnt out from reading after finishing high school/college.