Average Jane and the Bargain Aisle

I find myself fascinated with the half aisle of my grocery store that they refer to as the "Dollar Store." It's full of random food items that they can afford to sell for a dollar or less, but everything is weird.

There are products with tie-ins to D-list celebrities (and yes, I know Walmart carries Larry the Cable Guy food items as well):

Items that are oddly specific:

Brands that are apparently from other parts of the country:

Whatever this is:

And extremely old brands that I had no idea still existed:

I can't help but wonder what quirk of logistics causes these items to be available outside their usual market areas and displayed for sale in my suburban Kansas grocery store. For a dollar, maybe someday I'll even buy some of them.