Most of prepping is attitude and skills not buying "stuff" - the "hidey hole / TEOTWAKI" stuff has as much to do with prepping as Captain Pugwash has to do with piracy.
Why do I break my back on a garden and learn to can, make my own soap, make vinegar etc.? Its just as cheap to buy things. But, by seed saving heirloom varieties, our garden is gradually becoming zero input, by converting to solid fuel range we can eat and be warm without gas, power, etc.
In my case rioters and looters would have precious little to steal (and a heck of a long walk too
- I wonder if looters have bivy bags?). Rather like bushcraft - its about what you know, not what you own.
I guess its a subject I enjoy because its very akin to "homesteading" and the variety of things to learn is so huge. In a few months I'm going to try making my own sugar from beet that I have grown. When the onions are finished drying, I'll make onion strings in the way I learned thirty odd years ago watching "Out of Town". The surplus garlic may well be swapped for a nice chunk of salt marsh beef. Oh - and I need to make another batch of home made laundry detergent as we are running low - but the spare fat off the meat should take care of that.
Red