What does かろう かろう なんだけどな mean?

Question

まあ　ごめんなさい。　この子　安酒の匂いがに苦手で。。。

"Ah, I'm sorry. This child is bad with the smell of cheap sake"

And his answer is

あ　匂っちゃったか~ 安かろう美味かろうなんだけどな ひっく!

"Ah, it stinks"

What exactly is the meaning かろう+ かろう+ なんだけどな?

Answer 1

安かろう美味かろう is a one-off parody of 安かろう悪かろう, which is a common set phrase. かろう is an uncommon inferential (or "volitional") form of an i-adjective:

• よかろう - What does it mean? Where does it come from?
• Is the volitional form of i-adjectives often used?

So the literal meaning of 安かろう悪かろう is something like "seemingly cheap, seemingly bad", hence the idiomatic meaning of "you get what you pay for". You won't see this ～かろう～かろう pattern outside of this set phrase, so you need to learn it by rote.

In your case, 安かろう美味かろう is the opposite of 安かろう悪かろう, so the intended meaning as a parody is "This drink tastes great for the price" or "You get more than what you pay for".

～なんだけどな is just "It's ～, isn't it?". 安かろう美味かろう is being treated as a long noun phrase.