I don't know how "regional" Big Lots is but I have determined that you could pretty much buy 90% of your food for a thru hike at Big Lots. Being a clearance outlet the offerings are sporadic, but I often peruse the aisles on my lunch break, probably 2 or 3 times a month.
Today's spoils:
2oz mini-bags of Bear Naked Banana Nut Granola: $.80 at Big Lots
* Betty Crocker Warm Delights Minis (2-Pack): $1.50 at Big Lots
PowerBar Electrolytes 8 stick multi-pack: $1.50 at Big Lots
There was also foil packs of Valley Fresh White Chicken, and various brands of foil pack tuna. I also saw lots of Knorr Sides style pasta and rice offerings and lots of various cereal bars and energy bars.
* As an aside, the Betty Crocker Warm Delights work really well in Sarbar's Fauxbaker. I made a Fauxbaker this week and the first thing I tried was a Warm Delight. I mixed it exactly as described in the instructions and even "baked" it in the bowl it comes in. The bowl didn't melt and the dessert was perfect!