Green Book publishing did go belly-up a few years back after trying to spread their success with the Dept 56 guides to other collectibles. They only published the HL guide one year and then along came ebay.

I recall someone reporting that the 'Green Bay' name was bought out for use in a Dept 56 price guide by another publisher, but I can't be certain about that. Anyone else?

I'd be suspicious of the values for any guide book that originate with a single secondary market dealer. Nothing personal about Matt Rothman, but he has a vested interest in higher prices and there is no one else in the secondary market business to balance or challenge against.

ebay has been both the great boon and bain to the secondary market... but that's another rant.