I like to get my hands on the cheapest edition I can in the best condition at that price. If the words in the book are the same as a more expensive one, I’m getting a better value, in my opinion. Then if it’s a story that becomes really important to me I might consider upgrading to a “nicer” or collectors version, and keep the old ones as lender books.
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.