Japanese by Example
Learning through examples in manga

Please let me pay with 〜せてください

レンタルおにいちゃん » Volume 1 » Page 95

To help ease Kanami’s sorrow due to her situation in life, Makoto offers to let her rent time with him as an older brother. On the first rental, Kanae says she will pay him, something Makoto wasn’t expecting.

叶実(かなみ):
「レンタルはお(かね)がかかります」
“A rental costs money.”
「だからお(かね)(はら)せてください
“Therefore, please let me pay.”

The verb (はら)う becomes the causative (はら)せる.