a dime a dozen

/ɐ dˈaɪm ɐ dˈʌzən/

a dime a dozen

something that is very common and therefore, not very high on price and value

Examples

1. Those squamous cells are a dime a dozen.

2. Some are larger than ours, and some are smaller, some burn hotter and some burn colder, but in the Milky Way, planets are a dime a dozen.

3. We live in an era in which superhero shows and movies are a dime a dozen.

4. And you end up knowing that smart people are a dime a dozen, and they don't really amount to much.