This is an interesting domain due in part to the popularity of SportsBooks. There are over 1 million search results for Sports Book, but only a few thousand for Sports Booklet. It tends to lean less toward gambling and more of a howto.
This would actually be interesting to develop as a sports rules book. For all sports. I love the idea, because how many times do you have a specific rule question about a sport?
Value? Good question.... but youve come to the right place. I think development wise, if you were to attack the online sports wagering market, you could fetch up to a few thousand (this is of course if an end user came along)
On a resale market? You'd be looking at high xx to mid xxx
Good luck,
Justin