The restored value varies widely. It depends on the quality of the restoration and the motivation of the buyer. One person's "restoration" is a paint job and a decal. Another restorer goes over every square inch to bring it back to better than the factory ever made it, kind of like a show car.
I have seen restored pumps sell at auction for less than the estimated value of the pump, parts and paint materials. But sometimes way more. You have to catch the right person, in the right location and who wants that model of pump in the brand gas and colors you have done it in.
The best way to do it is to find a buyer before the restoration in a location that would be practical for delivery. Let the buyer choose the color scheme and branding.
Restoration is not an automatic way to make a profit. Often it is easier to sell an unrestored pump.
