I was just nosing around the ABE, the book dealer site. I decided to see what my first edition of Anyone Can Whistle in like condition (pretty much minty fresh) is going for. There's only one copy in like condition and it's going for $1750 (not that anyone would ever buy it for that much money) - it's a review copy, which does bring a premium. I wonder then what this dealer would charge for my inscribed by Sondheim copy?
There are cheaper copies but none cheaper than around four hundred bucks and not in good condition.