Book Sale

I am trying to decide whether to have a massive book sale after Christmas. I have managed to accumulate a lot of stock over the 5 years that I have been running my business and despite numerous sales have still got a large number of books. I am tempted to try to clear some space by listing everything on eBay at a 0.01p starting price with free postage to see whether I can shift a large proportion of the stock. Of course it might be cheaper to just take it down to the local charity shop!