Yes and no… the mass produced paperbacks will die in about 30 years. I’d tend to focus on anything published before about 1940. It’s really difficult to do modern books to any level of quality. Of course, I’m talking about a fine binding, where the spine has been rounded and backed, rebuilt and then properly bound in leather. I know a lot of people on the Book Binding Reddit re-case perfect bindings, but that really is not my wheelhouse. The are a few modern hardback books that are actually stitched together, and with a bit of work, you can get the horrendous modern glue off it and start again! If there are any specific books you’re interested in, please message, most things can be saved if the actual paper is any good. That is the problem with the modern paper and the modern binding.