Weck jars are my absolute favorites for canning and and just looking at. It's been ages since I've been able to get any replacements for the ones I have and used for a decade because the shipping costs on heavy glass are prohibitive.
But today, entirely by chance, I found a great selection of them at Crate and Barrel. They're sold individually. Alas, they don't have the gorgeous tulip shaped jars, but they do have at least 4 sizes (I think they may have had 5 or 6) of the tapered jars.
The tapered jars were actually exactly what I wanted. I wanted the ones that are a little bigger than 8oz for making individual pies in jars that I can send to my son.
Sorry I didn't think of getting the rundown on prices. But if you haven't yet canned in Weck this is your opportunity to give them a try when you only have to buy a single jar to fall in love with them as I have.