Everywhere you look anymore, you will see a dollar store of some sort or another. Certainly some are better than others!
Dollar Tree has been around for a couple of years that I'm aware of. I love Dollar Tree. Any store I've been in is very clean - well stocked, and cashiers are always present.
I've found many items for $1 there that I would be 3 to 5 times more for in a grocery store. It's the same product, but priced just right. Everyone I know visits their nearby Dollar Tree and frequently. Why don't you?