Those prices show just how much has changed in the UK since 1968 - the year first-class stamps were launched, priced 5d.
It’s not just the cost of living that was very different back then, with these retro photos painting a picture of how life used to look all those years ago.
They capture scenes from around Sheffield during the year Planet of the Apes hit cinemas, and the Beatles released Hey Jude.
They are bound to bring back memories for many readers, of lost shops, schools, leisure facilities and much more.
Do you remember shopping at Redgates, Pauldens department store or Walsh’s?
And did you and your family ever cool off in the lido at Millhouses Park or catch a film at the Studio 7 cinema on the Wicker?
If you’re lucky, you may remember the Black Swan and the seminal performance there that year by Sheffield legend Joe Cocker.
You’ll almost certainly recall the popular Lord Mayor’s Parade, which attracted huge crowds each year; the Whit Sing events; and May Queens being crowned around the city.
The Hole in the Road subway, with its fish tank in the wall; Thorntons Chocolate Kabin, with its array of tempting treats; and Castle Market, where you could buy almost anything, feature too in this trip down memory lane.
Do these photos bring back any memories for you? What do you miss most about Sheffield in the late 60s?
17. Pauldens
A youngster meets Father Christmas at Pauldens store in Sheffield in 1968 | Sheffield Newspapers Ltd Photo: Sheffield Newspapers
18. Studio 7
The Studio 7 cinema, on the Wicker, Sheffield, pictured in 1968. It opened in 1920 as the Wicker Picture House and was demolished after closing for good in 1987. | Sheffield Newspapers Photo: Sheffield Newspapers
19. Redgates
A window display at Redgates toy shop in Sheffield showing a miniature racing circuit, in May 1968 | Sheffield Newspapers Photo: Sheffield Newspapers
20. King Edward VII School
A young boy proudly walks the street in his new King Edward VII School uniform in 1968 | Sheffield Newspapers Photo: Sheffield Newspapers