Wordpress bug fixing service

Hello,

Because I am quite good in finding issues and quickly fix them, I was thinking to offer a service with a fixed price for fixing website issues.

I have worked several years as freelancer and ther e was a lot of clients looking for quick fixes to their issues.

I was thinking to have a pricing model based on how quickly you need it done and for start we could focus on wordpress/ php/jquery/mysql .

IS this something that could work as a business model ? I am asking here because I haven't seen any website that offer this service.