Hi there Bob. Welcome to NamePros!
You have a very nice domain. Personally I would shoot for at least low $xx,xxx. Last year a personal friend of mine informed me that he sold a similar domain (####books.com, cannot disclose the actual domain) for $100k. He registered that domain for personal use, also back in '96. I don't want to be overly optomistic, but if you're patient you could possibly see a mid-high $xx,xxx return.
I would be interested in knowing if you have you received any offers in the past?
All the best,
Tom