Please be 'country-specific' in your question.
In 1970 a dozen of fresh eggs cost only 62 cents. Therefore, six fresh eggs would have only cost 31 cents in 1970.
Your mom...sike 50cents per dozen
In 1955, my father sold eggs wholesale for $.35 per dozen in lower Michigan. I believe retail was about $.55 in that year.
The average cost for one dozen eggs was 69 cents in 1948. That same year, a pound of bacon was 59 cents, a tube of toothpaste was 41 cents, and the price of a movie ticket was $1.20.
Eggs were .10 cents. A loaf of bread was .05 cents. Isn't it amazing how different the economy is now compared to 1939. A postage stamp was two or three cents. In my dreams. You could buy a car for $600 to $1500 for the very best. A house was sold for about $3000 depending on quality, size and age.
A dozen eggs in 1912 cost only $0.40 for one dozen
53
1.50
33pence
$0.12
about 1.60 for a dozen
5
4.99
In 1970 a dozen of fresh eggs cost only 62 cents. Therefore, six fresh eggs would have only cost 31 cents in 1970.
Eggs are not sold by the box, but the dozen and in California I am paying 4.99 a dozen.
The cost of a dozen eggs in 1970 was 62 cents. The cost of a gallon of gas in 1970 was only 36 cents.
In 1989 the cost of a dozen eggs was about 96 cents. The price of that item has approximately doubled in the intervening years.