From Longman Dictionary of Contemporary Englishbe two/ten a pennybe two/ten a pennyBritish EnglishCHEAP to be very common and easy to get, or cheap – used to show disapproval Rings like these are ten a penny. → penny
Examples from the Corpus
be two/ten a penny• Uncritical testimonials to the postmodern's attractions are ten a penny, and conservative denunciations thereof not much scarcer.• Dallams were ten a penny in the backstreets of Frizingley.• Teachers of history are ten a penny, and out-of-work teachers of history are twenty a penny.• There, residential and nursing homes are two a penny.• These rings are ten a penny.• Now they are two a penny - or rather they were until 1990.• Moreover, although titles were two a penny in Cannes, Lord Westbourne was different.• Anyway, they would fall in love with these Counts who were ten a penny and even pay for their drinks. 