Dinny (sorry, i don't mean to be butting in)
imo amazon charge waaay too much in final value fees.
If you have a lot of books etc it may be worth setting up a shop - free for the first month and £6 per month after.
Most of my books go in the shop - the only ones I auction are the ones I'm certain will attract more than one bid - you can research this by looking at what is already there.
If you discover a book is listed umpteen times already then tbh it's not worth it - but you could put all these in a job lot. Job lots do okish at attracting bids.
If you opt for the shop try listing on .com. It's the only way the millions of US ebayers to see to your stuff and it's only a penny or two for gallery (I think it's about 15p for UK shop)
Listing fees are cheaper for media (books Cds etc) but final value fees are over 9% - with this in mind, tbh, if you are looking at getting less than .99 for a book (with a competitive p&p) you will lose money in the long run.
Good luck!