Navicure cost $100 per month for clearinghouse, I believe it is unlimited submissions.
There is an extra fee for add ons like ERA, etc.
There was a setup fee for them to do the paperwork to all of the insurance companies, you just have to sign. Excellent service. They always answer the phone by the third ring. It is their policy. I think the set up fee was $1000.
I know it is a lot, I hated it but I am happy. Well worth it.
www.navicure.com