Depends on whether you can find an interested buyer, but somewhere between 1gp and 100gp would be the going price.
Are you asking this because you are thinking of selling on vendors or because you are looking to buy? If looking to sell on a vendor, I really wouldn't bother - they drop as loot on many different mobs and I would imagine there is a limited desire for them as far as player populations go. That being said, if you still had your heart set on selling them, I would package them together with sulfurous ash and sell that way. If you are looking to buy some, I agree with Luke that you really shouldn't pay very much for them.
Thx it was both for selling / buying purposes now and in the future. - Back to UO after many years and it takes time to figure out the value of things!
