to be had for next to nothing; common enough to be worthless
Bad teachers are a dime a dozen in most high schools in Los Angeles.
adj: something so common that its value is little or nothing.
Rappers like Ja Rule, Chingy, and Benzino are a dime a dozen.
easy to come by, next to worthless
She said, "Don't let it go to your head. Boys like you are a dime a dozen."
An expression used to describe something or someone as generic or easy to find.
"Jobs at fast food restaurants are a dime a dozen these days."
cheap, easily replaced, not valuable
Guys like that are a dime a dozen.
Anything that is plentiful with little value. Possibly this phrase originated in the early 1900's as a sale discount for candies that cost a penny.
Opinions are a dime a dozen.
Mr. Rawley, a prestigious educator from Imagine Schools says, "In reference to dime meaning 10 and dozen, 12, this phrase can be described as an event or phenomenon occurring 10 out of 12 times.
It's believed that "dime a dozen" originated in the 1800's when a hen was expected to yield at least 10 viable eggs out of 12 that are laid.