My experience tallies with Q's, and I use that site a lot. I have generally received items sooner than stated, and when something was of questionable availability they'd send me we-are-still-trying notices and offer the option to cancel. (And if they finally give up on it, they'll tell you.) You can cancel an order pretty much anytime until it is being prepared for despatch - by which time you can be sure the goods will be arriving shortly. If it were me, I'd take a chance.

Don't forget to access Amazon through Mudcat so Max gets some help:

http://mudcat.org/support.cfm (Amazon links are the bottom of page) (yes, Fred, I know you know... just sayin'... ;-)