dirt cheap; ridiculously low price
Colloquial term emphasizing an extremely low price, often with a nuance of surprise or disbelief. Used in casual conversation and advertising.
The clothes at this shop are dirt cheap, so I end up buying too much.
I found a ridiculously cheap flight ticket, but I wonder if it's really okay.
Common colloquial spelling using katakana for バカ and kanji for 安.
Kanji spelling; less common but still seen.
Compound of バカ (fool, idiot) and 安 (cheap). The prefix バカ intensifies the meaning, similar to 'stupidly cheap' in English. The exact origin is uncertain, but it likely emerged in casual speech.