Check out any 99cent stores that you may have in the area. There is one here that I always check first. I've picked up name brand lacquers, enamels,acrylic and epoxy paints and primers. All for you guessed it, just under a buck. One thing to watch out for though is the cans that are that dont have any thing but propelant in them. I don't remember what they are called, some were Sherwin williams something or another. I have no clue how you would get the color into a pressurized can, but I are a carpentar. Sorry, back to the point. Good stuff. I have also got some with a paper label with a tiger on it, has held up really well.
Hope this helps. Besides you have built in rubber masking if you repaint prior to tires. LOL!