I’ve mentioned that I had hear that you could order Ball/Kerr mason jars (it seems that Ball and Mason are the current brand names and “mason” is something like a generic name, anymore — the company which manufactures them responds to Ball and Mason). I’ve mentioned that Ace Hardware has an unbeatable deal (order on-line for a price you cannot find anywhere else, and they ship it free to your local Ace Hardware store)
I went online tonight and located an Ace Hardware store which is on my subway line (and, added benefit, in a cute neighborhood that I would like to visit again, in Greenwich Village). I tried to order, but the website would not accept my cellphone number. Grr. Still, they have a 24-hour help line, with very polite American native English-speaking customer service reps. Hence, I got my order placed in a relatively short time, and will be able to pick it up at an Ace Hardware Store on W. 3rd St. in Greenwich Village, just a couple of blocks from the train which will take me home again with no transfers.
The cost for my jars is $10 less than anywhere I could find on-line, including amazon.com
If you need jars for canning, pickling, preserving, culturing, etc., or for whatever other reason, I recommend Ace Hardware.