Anyone ever see that episode of Happy Days when Marion runs the hardware store while Howard is out of town? He returns terrified to discover that she held a "dollar paint sale," then amazed to discover the store actually made a huge profit: They made a killing by selling accessories that are sold alongside paint - items like paint brushes, rollers, thinner, tarps, bridges, pickups, raw necks to mate with painted bodies, tuners, etc.
Huh. Go figure!