lifesavers
Clarence Crane of Cleveland, Ohio, in 1912 .
A dozen eggs in 1912 cost only $0.40 for one dozen
5 cents
The collective noun for Lifesavers (the candy) is a roll of Lifesavers. There is no collective noun for lifesavers (also called a life ring). However, a noun suitable for the situation can be used, for example a stack of lifesavers, a row of lifesavers, a locker of lifesavers, etc.
In 1912, Titanic was built for $7.5M which would be about $400M today.
Too much of anything can be bad.
1 cubic centremetre
Titanic's building cost (in 1912) was $7.5 million. The equivilent today would be about $413 million.
In 1912, Titanic was built to the tune of $7.5M US.
Nowadays it would cost 400.000.000. But it actually costed 7.500.000 (dollars of 1912).
A meal in a restaurant in 1912 might have cost between 25 cents and 50 cents for the entire meal. Most families did not eat in restaurants at that time unless they were traveling.