lol nice
I might be mean but at least I'm... mean
Coleman camp stove fuel is the cheapest and purest source of this that I've found easily. Charcoal lighter fluid or zippo fluid is usually naptha but may also be alcohol mixtures so avoid those unless you're sure.
charcoal lighter fluid is mineral spirits
coleman fuel is white gasoline (gasoline with none of the additives for antiknock or oxygenation)
you can buy specifically labelled naptha in the paint isle next to the other solvents, but really unleaded gasoline is pretty much interchangeable for nearly a tenth the cost
just shake in some water to drop the alcohol out of solution if it bothers you, it collects the alcohol and then sits at the bottom
I use gasoline with the alcohol still in it when painting stuff, mainly because proper "vm&p naptha" is more expensive and I'm cheap.