I accidentally got a spit-take at a small local model show a while back.
I was looking at the usual Very Low Priced book sales table that is almost always at every show.
Anne said "Oh, more books, do you need a book for each model in the stash?",,,,,,,I said "No, but I do need one for each model I will actually finish" a guy behind and to the side of us almost drowned on his cold drink, lol.
I am a huge fan of the Ginter books and the other "thin paperback" companies, and will buy Hardcover references at the drop of a hat, especially if I can get a whole set.
Remember, buying individual photo prints can cost as much as 12 dollars per photo, so as long as you see a photo (new to you) for every 12 dollars, the rest of the book is free.
Rex