a dime a dozen

With literal origins; now usually in the figuratively extended sense.

• "Near-synonyms: not worth a dime; see also Thesaurus:worthless"
• "People with your skills are a dime a dozen these days."

• ten a penny
• not worth a dime
• for the birds
• good-for-naught
• good-for-nothing
• not worth a damn
• not worth a dime
• not worth a plug nickel
• not worth a brass farthing
• not worth a cent
• not worth a cress
• not worth a curse
• not worth a Continental
• not worth a farthing
• not worth a nickel
• not worth a penny
• not worth salt
• not worth a whistle
• of no value
• otiose
• valueless
• null
• worthless
• worth nothing
• wutless

• dime-a-dozen