When we were in Vietnam many years ago, I bought probably half a dozen books to read I’m the train. They were things like Da Vinci Code, some Clive Cussler, probably a Stephen King book or two. Basically popular English titles at the time.
All clearly dodgy copies, with 16 colour covers and poor quality print and paper. All clearly from a place like this as they were being sold EVERYWHERE by street vendors. Given I was only there for a couple of weeks I wasn’t concerned about the quality as I wasn’t planning on keeping them long term.
Without exception, every book was hugely flawed. Missing chapters, half the book just repeated, pages only half printed, random Harry Potter pages in the middle of Da Vinci Code, etc.
I kept them just for the fun factor. Never did finish Da Vinci Code (as in legitimately). I did read the first half twice though!