Thanks so much, JiltedJohnsJulie, Clawdy, listsandbudgets, swivelchair, Avebury, SavoyCabbage, mrssmiling and bookmum08!
I'm sorry for not getting back and replying and thanking all of you sooner - that pesky Real Life had other ideas.
I really like those suggestions. It turns out the Fair Committee may have other ideas, but I'll do what I can!
To my horror, I hadn't thought about the involvement of the kids at all, even though the fair should really be all about them (with fundraising coming second). Will definitely push for that and make sure we let kids who are short of the dosh have the book :)
Also, I've been checking out other book stalls in my town (half the schools have autumn fairs and ours isn't until Spring) and have noticed that the most organised-looking stalls have the following in common:
The same, low pricing scheme for all books (as suggested above) - something along the lines of $1/book, 50c/kid book. Some of the better-off schools have upscale magazines, as well, for 3-for-50c.
Generous aisles between rows of trestles, which are arranged to keep people flowing without blind corners. (One school had a spot in a vast school hall and had a square ring of trestles with all volunteer staff in the centre).
Keep books together by genre in cardboard fruit boxes (with spines facing up and big labels on the boxes/tables).
Absolutely noone has been selling music or posters or anything peripheral like that. And noone seems to sell old reference books (dictionaries, encyclopedias).
I've been told we need six adult volunteers, so I went around and nabbed them before other stalls snapped them up - I'll keep communicating with them as we go, because there's nothing like a keen bookstall volunteer who is on the same page :)
Thanks again! :)