I have 24 flip top bottles (500ml / 16 oz. size) w/ caps and gaskets for sale. I have an extra pack of gaskets to throw in as well.
These are great for homebrewing beer and would probably work well for soda too. $30 for all. Located in Chestertown, MD (zip code 21620.) Local pickup strongly preferred, as shipping/handling of these would likely double the price...