Antonyms of adj two-a-penny

1 sense of two-a-penny

Sense 1
sixpenny, threepenny, twopenny, tuppeny, two-a-penny, twopenny-halfpenny -- (of trifling worth)

INDIRECT (VIA cheap) -> expensive -- (high in price or charging high prices; "expensive clothes"; "an expensive shop")

Similarity of adj two-a-penny

1 sense of two-a-penny

Sense 1
sixpenny, threepenny, twopenny, tuppeny, two-a-penny, twopenny-halfpenny -- (of trifling worth)
       => cheap (vs. expensive), inexpensive -- (relatively low in price or charging low prices; "it would have been cheap at twice the price"; "inexpensive family restaurants")