'72 scamp ?
Mom drove a 72 Scamp from new until 1985. I can remember two main issues with the car- rust around the bottom of the vinyl top and a metallic blue paint job that faded and peeled before it was 5 years old. Otherwise it was a great little car. IF the car is complete, runs well, and isn't a rust bucket, $3000 sounds very reasonable. Take a look around that top area- that could be a high priced repair spot.