I just installed a product filter on the store so you can now shop for guitars using a variety of criteria including price, soundhole, brand, scale length, body size, etc.
See:
http://shoppingcart.djangobooks.com/gui ... itars.html
Each guitar now has a standardized spec sheet with all the materials, dimensions, and other details. Should be easier than ever to find what you're looking for.
This is still in the beat version so let me know if you notice any problems. I will me implementing these filters for others sections of the site soon.
Michael