代金は

as for the cost

→ 代金
phrase Rare #34,668
as for the cost 代金 means the price or amount of money paid for something; は marks it as the topic. The phrase can be translated naturally as “the cost” depending on the sentence.
JA: 代金はあとで払います。
EN: I’ll pay the cost later.

代金は受け取った。

I received the payment.

その靴の代金は払いました。

I paid for those shoes.

あの靴の代金は払ったの?

Did you pay for those shoes?

代金はここにそれじゃ

Here’s the payment. Well then...

— デッド・ドント・ダイ (2019)

「ルイーズ、停泊許可の代金は誰に払えばいいんですか?」と私は尋ねた。

“Louise, who should I pay for the docking permit?” I asked.