I just go by the bottom line of how the prices of common things climbed over time. Naturally they don’t change in unison. Some things cost 10X more some are 30X more, but overall, I use x20. For example they can’t computerize a Pizza Pie or use robotics. So .15 cents a slice should be about $3.00. And .25 Gasoline s/b $5.00. Back when we were kids working for $2/hr, s/b X20 $40/hr today. $2500 decent car? X20 $50,000 today. Including sales tax. House? They were $40k X 20 s/b $800k. But houses are behind like X10 and X15, $400k to $600k.
By the way, at $2/hr and .25 cent gasoline, you earned 8 gallons per hour wages. $4.75 X 8 s/b $38/hr. starter pay.