I'd feel like a killjoy giving some cut-off, especially if it were restrictive. I'd go at this question a different way. Whether
you have cabinets and storage boxes full, to last you the rest of your life, or a small stash in the drop-front of your
pipe rack and on a shelf or two, you don't want so much that you feel you have to put it in your will. I think probably
being somewhat restrained about quantities, so you still feel rational when you order a new blend to try, is a good way
to go. If you're going to order more than a pound of anything, it should be something you've enjoyed for a couple of
years, so you have reason to believe you will continue to enjoy it. Otherwise, going a few tins at a time, and allowing
yourself some variety, is probably sensible. Or if hoarding mega quantities is your joy, that's okay. Just tell us about
it so we can buy stock in Ball Jars.