Depends on your location, size of eggs, etc. I just bought a dozen for a dollar, Sept 2016, in central Virginia.
A dozen eggs in 1912 cost only $0.40 for one dozen
33pence
1.50
$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.
In 1989 the cost of a dozen eggs was about 96 cents. The price of that item has approximately doubled in the intervening years.
The cost of a dozen eggs in 1990 was about one dollar. A loaf of bread was about 1.57 and milk was around 1.42.
a dozen eggs cost 20 cents in the 1970'