I have upgraded to Omni automotive paint (how ever that is spelled) because it last longer and does not fade so quickly. Plus it drys very fast, and is cheaper then buying lots of spray cans - it is about 30 bucks a gallon.
Could you mean $30 a quart?
Last time I bought Omni MTK single stage acrylic urethane, it cost me about $80 a gallon plus the hardener.
I just bought some PPG Shop-Line JAU single-stage Urethane in Texaco Red today and it was over $40 a quart plus the hardener.
Shop-Line is basically equivalent to Omni.
This paint sprays really nice with my Harbor Freight gravity touch-up gun. It's really easier to spray with than using a rattle can paint and the gloss is better too.
This is an economy paint for an automobile but a superb paint for a gas pump. Since it uses hardener, this paint is superior to even the best automotive lacquer or acrylic enamel. It's way, way better than any rattle can paint.
Rattle can paint for the insides is OK. But I recommend using acrylic urethane for the outside.
Try it guys. You will never go back.
By the way, I also use epoxy primer on all the outside parts.
You can't beat the price for the epoxy primer sold here: Southern Polyurethanes
Not only is inexpensive, but it is probably the highest quality epoxy primer available.