The pages feel thinner and you can see the text on the other side more as well. Book 6 is a 10th printing and book 7 is a 5th printing. Doesn’t say years, so I wonder if they switched to thinner or back to thicker?
I basically never go into book stores, so I didn't see any of the DCC books until last weekend. They didn't feel that big when I was reading them on my e-reader.