I've visited Haye on Wye where " The worlds biggest book shop " used to be some 30 or so properties in the town turned into bookshops several times over the last 30 years of so .
It has been noticeable that as the internet and computer games use increased the number of books shops has decreased .
On the last visit about 18 months ago I was time takling to a couple of the bookshop keepers and heard them bemoaning that the town has lost almost half its book shops.
They have been replaced with YE Olde Tea Shoppes and cheap Chinese garbage shops instead .
I asked where the books usually came from and was told it was in bulk by the ton from house clearance people and charity shops wioththe occasional direct buy from the visiting public but the public want far too much money for their books as no one is buying them nowadays .
Perhaps it is all to do with the general public being dummed down by TV gorpshows and the current dismal standard of most UK schools and their diluted examinations.
The local " Freecycle " has occasional been an outlet but the sort of books I read apparently don't appeal to mainstream as they are to do with personal development , mind enhancement and development and a few unusual books I've read on my way to developing my home based business as a comission sales developer .
Just before we came here I took several hundred books that I'd purchased as new or as good second hand ones to the local recycling centre and put them in the book banks .
Now I find myself with yet another 100 kg or so of books that I've read many times and moved on from.
But the time , effort and poor response of the second hand book market stops be wasting my time etc on trying to put them on sale so like the others I'll be visiting a book bank at the local supermarket if it is still there sometime soon.
Same goes for Munchkins & Alisons books , you put them out on free cycle then several interested parties fail to turn up and collect when you have specifically stayed in for them to come and collect , instead they will now go for recycling..
That way they can try and sell them or sell them as a recycle paper source.
One last thought
One thing about using too much shredded paper ..it is made of wood etc. so will it need to be thinly spread so as not to upset the nitrogen content in the soil and is it likely to have heavy metal or other toxic inks in it if the books are much more than ten years old ?