Didn't see any dehydrated. You're right, shipping is BIG. What kind of local store would carry these foods in #10 cans? Thanks.
#10 food can are institutional size.
These cans is already rare in consumer stores. Preserved food even less likely.
You either have to pay for shipping or step above retail and attempt to buy wholesale,
Sams and Costco have some because they also cater to small restaurant owners, but most of them get their food delivered by companies like Sysco. That means a corporate account, tax ID, purchase orders, invoices, Dunn and Bradstreet rating, etc.
There is a pinned list of trusted suppliers pinned at the top of this board if you want mail order. Shipping food costs money inevitably.
Going local requires localized knowledge. That you'll need to discover for yourself.