Hello! I don't know what they are worth, but my experience with e-bay is to base your starting fee on the lowest that you would like to get for all of them. I don't know if you acquired them for free or bought them, so that is something you have to decide. You can put a reserve on them and e-bay will usually base your insertion fee on that price. But if your item reaches the reserve price, e-bay will not charge you for the reserve fee and just base your insertion fee on your starting price. Also when you research an item on e-bay, don't forget to check the completed items box at the left of the screen and click search. That will show you if any items like yours sold in the last month and what prices they sold for! Red prices didn't sell and green ones did! 9.99 seams like a good starting bid for those neat looking bottles though