Bernard, sorry no help but we have pretty much given up on using the Kilner jars now. They are just so expensive, Unfortunitly there is nothing to rival them.
We pickle more than anything, so we are lucky enough to have a fish and chip shop nearby that sell their giant pickle jars once empty, and because of the size they work out really cheap.
We didnt really do much this year unfortunitly, jon pickled some onions and eggs, and i made a batch of elderberry and plum jam but that was about it.
My parents have just bought a fruit dryer, as they are having the same problems with the cost of jars, seals and so on.
Do you have a cutlacks store as they often have the Kilner jars and seals, next time I go to one i will have a look and see if they have them and check the price out for you.
michelle