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by lostphilosopher 1347 days ago
Online booksellers often denote "mass market" vs "trade" paperback which does potentially give you info on the quality of the paper.

"The paper quality is better as well, as most often they are printed on acid-free paper like a hardback book." - https://biblio.co.uk/book_collecting_terminology/trade-paper...

(I've found this to be relevant when sourcing physical copies of out of print books.)