okay well that will help you out a lot, to give you a rough estimate i would think that as far as filler, sandpaper, thinner, and products like these its all going to be up to the condition of the car since some cars require more sanding than others. however with primer you should be good with a gallon this is enough to go around a car 2 or 3 times, and paint also depending on the style of paint will determine the amount.
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