Penny post cards,
“Stop where you are, buy a Brach’s Candy Bar. It is a dandy bar. A nickel is all you pay.”
“Twice as much for a nickel too, Pepsi Cola is the drink for you.”
Ice cream cone five cents one scoop, a silver dime for two scoops.
Candy bars five cents except Almond Joy and Mounds which were a dime.
Gas was .29 per gallon at the good stations in the late fifties, .32 for regular leaded. Ethyl cost a couple cents more.
Shakes were .20 and malts were 25. Some burgers were .19.
All comic books were a dime and classics, great for book reports, were .15.
These prices lasted quite a while, too.
In the late 60's I lived in Houston; had an Exxon station at the end of my street. I regularly paid 22-23 cents but during gas wars we paid 17 cents.
We always got Green Stamps with our gasoline----and they had nothing to do with environmental issues!