As far as I know there is not a guide book available for Casino Restaurant Ware. There is a general guide book for restaurant ware but it is a bit out of date and doesn't deal well with the specialty pieces. There are several plates that go much higher than this - for example the George's Gateway or the State Line Country Club large plates. The majority of the sales are private and are not done via eBay so it is hard to come up with an average value. They do make great collectibles though. This is one of my favorites....