Vipper, the cheapest canning jars I’ve ever bought RETAIL, were from Big Lots.
The cheapest/best deal I’ve ever found on them, was a garage sale.
Maybe folks on the gardening thread may have better sources for a good deal on canning jars, to replenish your stock.
Good luck!! Sounds like you do a lot of canning.
It’s 6+ acres we sell off more than we can, but we can alot. Easily 1.500 jars are canned.