Originally Posted by Kombucha
Is there a reasonably priced online source for those bottles?
Yes, but not really because shipping usually ends up costing as much as the case.
I found a case of EZ Cap 500ml swing tops for $18, which is pretty good, but shipping for a large heavy box was $17
I picked up the same case of bottles from a local homebrew shop for $22.50 + tax.
I think if you can find a case for under $25 with free shipping you'll be doing pretty good.