So now that Big W has further G1 retros available at $69, and how that seems exorbitant, I went back to my 1980s scrapbook of shopping catalogue clippings to see what the orginal cars and planes cost.
The major retailers back then (Target, Kmart, Big W, Myer) were selling them for $13-20 (lower pricing from sales) around 1984. As per the Reserve Bank of Australia inflation calculator, that's $45-69 in 2022 money (the calculator only goes to the last financial year), or 3.3% inflation (which is less than inflation at the moment).