Script Summary: Adds 2 buttons to the Amazon Wishlist page: 1 for a printable version of the page, and another for CSV export.
MAJOR UPDATE! This script uses Ajax to pull in all of the pages from your wishlist. So if you have more than one page of items, all of them will show up. It also now has some improved compatibility (I hope!) with the UK version and also displays prices.
Minor update: Hopefully fixed problem when an item is "Currently unavailable."
Another UPDATE: Amazon changed the HTML for the .com-based site's wishlist pages. I also made some further modifications to deal with empty prices and to make sure the script loads on most wishlist pages (please comment if there are still URLs that don't work). Thanks for feedback from Roger Carstairs, liviaalexandra, drill_here_fore_seismics and elzr
Another minor update: Amazon makes minor changes to its CSS classes, my script no longer works (maybe if they'd tag their HTML with useful ids or something...). Thanks to wrongindustries this time.