I've only put the number of pages on a few on my books, because the number of pages as stated when you search for info on the ISBN No & the actual figure doesn't always tally.
Which figure is the one to use?
If the figure in the listing is different to other listings of the book it looks like there is a problem with your item.
If the figure in the listing is pulled from one of the web databases & is wrong, could you be held accountable for item not as described?