From Longman Dictionary of Contemporary Englisha dime a dozena dime a dozenCOMMON American English informal very common and not valuable SYN ten a penny British English PhDs are a dime a dozen nowadays. → dime
Examples from the Corpus
a dime a dozen• Girls are a dime a dozen.• Jobs like his are a dime a dozen.• So-called solutions to the longitude problem had been a dime a dozen even before the act went into effect.• Metaphors of Britain's decline have been a dime a dozen in the post-war years.• Sam told her not to worry, jobs like that were a dime a dozen. 