Inside-spur gear sourcing

Hi, I’m looking for a large (5-6" inside diameter) inside-spur gear. I’ve only managed to find one online, and the vendor wants $200 as it is custom and in brass, which is more than the cost of my entire project. Does anyone know where I might manage to source an aluminum/steel one?

Unfortunately we don’t sell such a product, nor od any of our suppliers seem to carry one. Google is your best friend in this case.