5/24/2016 9:05 PM
Jim,
Three decades???
Probably easier, and, I would think, more accurate, to get with the major brands and ask for their list pricing (which they never charge anyway), and deduct a given percentage.
I bought a bunch of stuff in 1995 (only 2.1 decades ago) and I have no idea what we paid for any of it back then. I don't even remember the models, let alone the brands, of what we bought.
You're pretty much asking guys to remember what they paid for stuff - on average - three or four jobs ago. But then again, some guys are probably still using stuff they bought three decades ago.