Is Dollar General the equivalent of Pound Land?

Probably. Their gimmick as someone else said, is every price ends in 00 or .50. Most stores in the US are .99 or something. That “illusion of cheaper”. Walmart tends to be .98.

But also, basically every tiny rural town has 1 or 2 of these stores. They may not even have a Wal-mart ofna regular grocery store, but they will have a Dollar General.