I agree - it's a trait of the publisher, over which I unfortunately have no control Most LabVIEW books are printed by PH, and they have lower prices. (Actually, I originally pitched my book idea to PH but after a few rounds of negotiation and a lot of time, they rejected it as they already had someone writting a competative title).
Most of those more expensive copies are actually new, and they're being sold by companies that are trying to make a bunch of quick money. Often those companies (I'm not saying it's the case with the ones selling my book) have exclusive contracts with customers, so their customers must buy through them - that means they can pretty much set whatever price they like... As for the people selling the used ones for twice the price - I can't imagine why or how they're going to acheive that!
I figure that her comments are valid to her (otherwise she wouldn't have been motivated to write them), so I am thinking them through. ONe concern of mine is that potential buyers might add a lot of weight to her comments if her's is the only review there. To that end - if you're reading this and you are the reviewer: I'd love to hear from you! (amazon.com doesn't have a method of contacting a reviewer) I'd like to spend some time going through your issues so as to make the next version (if it ever comes) even better!
Thanks Mike - I appreciate it
I do mention Pete Parente's, Irene's and OpenCV solutions in my book (although the former two were all in their infancy when I wrote it), and I agree that a lot has changed. I specifically left a lot out due to space contraints (color processing for example) and would like the opportunity to address those issues. That said, writing a non-fiction book is a lot of work for very little financial return. I've certainly gotten non-financial return from writing it (which was my real motivation), but penning a second edition might be beyond me at this time...