Welcome to AT!
Since the advent of the internet the market for sales of collectibles moves so fast it would be folly to publish a price guide.
Take the Buckland Romani deck for instance. Some folks have traded it here for decks of much lower current value, because to them the deck they were acquiring had a much higher value than the BR.
And if you published a book saying the BR was worth $300.00 and two weeks later you saw the sale of a BR go for over $2000.00 would you send an errata to everyone who bought the book? And then another one when you discovered the person who paid $2000.00 was actually buying the deck for the bunny card?
And then you get information from the artist that the deck will be republished shortly? Where does that leave your price point?
I have a shelf full of price guides upstairs from my mothers antique shop, they are like cookbooks from the 1800's. Fun to read but absolutely worthless for anything other than identification.
Rereading this it sounds like I'm talking down to you, Please don't think that, I've just been thinking about this since last week when I was going through those books, how the internet has change the way we do so many things.
edited to say I think Karen is right, it was the Alchemical, not the BR that went for 2K...they both have bunny cards, they are both being reprinted so the reasoning still stands