Not sure. I've never seen it before. those were the days!! Southpark, if this gets you bent, you would have had a coronary over the stuff One Load used to post on here. If you don't know who oneload is you haven't been around long enough to comment.
The prices or the intent? In regard to the price maybe a rule of thumb would be to add a zero every 30 years.
Does it matter? I've never seen it, and think it's cool as hell! Sorry that you seem to be inconvenienced by this. As far as the prices, when you consider that people were making from less than a quarter to about $2.00 a day, the amount of time needed to earn the money needed to pay for the service/part, proportionately, is very close.