I just sold the 78 Chev 3/4 ton. I took the amount it sold for, from the amount I paid, and divided it by the years I owned it. And got $39.00 per year.
Kid who needed it bought a clean 79, but the engine was no good. He will use the engine and a few other parts for his 79. I have the cash, and will deliver it on Wednesday. I use a small trailer behind my Dodge Caravan these days.