Hello,
Yes, you can certainly sell old books in Ebay. In book category Ebay donot charge listing fee. Only when it is sold 6% Final Value Fee is charged.
When you will list the item, in the page, you will find two option-- New or Used or Old Book. Here you may choose old or used book. You should give the actual picture and actual description in pages to avoid future problem
I hope, these information are sufficient to start your listing.
Thank You,
Ashok Agarwala