Root Canal

Hi everyone,
recently (last week) my pug cracked off her bottom K9, after going to the vet it was determined taht the root is showing and that she has to have a root canal by a specialist (no they can not extract it because they say it will crack her jaw :(... my question is if anyone is familiar with any rescues or anyone that provides these services? my only option costs up to 1500$ and im just making sure theres no other options.
Thanks!
Melissa