買わせて

let (someone) buy, make (someone) buy

→ 買う
買わ buy + causative + imperative form
verb · imperative Rare #37,716
let (someone) buy, make (someone) buy Often used as 買わせてください to politely ask to be allowed to buy something.
JA: これを買わせてください。
EN: Please let me buy this.
Conjugation of 買う
Imperative
買わせて

買わせてくれ

Let me buy it.

— デッド・ドント・ダイ (2019)

別の買わせて下さい

Please let me buy a different one.

同じ買わせてちょうだい

Please let me buy the same one.

別の買わせてもらえるかなあ

I wonder if I could buy a different one.