I have food savers and canning jars but, they are primarily for when the world goes to hell.
I’m lazy, so I ordered powdered milk, eggs, wheat, rice and beans(various) already packaged for 20 years.
It’s not a money thing for me as I don’t intend on opening the packages ever and if I do I hope to be very happy that a younger man thought to save up....just in case.
Now in the canisters, you can seal jelly jars, spaghetti sauce jars or most any glass jars. Just put one in the canister and seal it up. I have been drying vegetables and fruits and I am sealing them in jars.