Great Middle Grade Reads discussion

Hi Everyone,

Does anyone have experience of promoting their book on instagram and whether paying one of the book promo accounts, such as thewriterswarmth, helps with exposure and sales? I've just rejoined instagram for promote my book and the most common post comments I receive are from these accounts.

A very very late comment to this, but I think thewriterswarmth and the like are kind of spam-ish. Meaning, I probably wouldn't pay for their book promotions.