I make a specialty body for our club. It is a generic formula ford based on one called a RAY. About 100 have been made. One of the things that people wonder is how much it costs. This is hard to determine as my body is small, but I cast it relatively thick.
1) What can be measured?
a. The materials going into the master. Wood, putty, paint, sandpaper, tools, and sealer.
b. Time spent on the master. This is hard to put a $ figure on.
c. Cost of silicone for the inner and outer mold.
d. Cost of resin for the bodies. (I get 30 bodies per quart).
e. Time casting, fixing blemishes, etc.
f. Mixing cups
2) What can't be measured? The joy you get from seeing your own creation painted, decaled, and racing by the boys in the group.
I look at some of these by other people selling for $40 and say, "They are generous people."