"Eigenvector" wrote
I'm calling around for some sort of quotes to replace my failing circuit
breaker box and so far I've only received one estimate.

The price they quoted was about $2500 bucks roughly or $91/hour for their
work - including permit and inspection. No other electricians want to
release their hourly rate nor provide estimates. I'm not bitter about
it, just interested in how much money I'll have to secure to do this.

So if you had to guess, what would it cost to replace a non-grounded
circuit breaker with a grounded circuit breaker IF I SUPPLIED THE
BREAKERS AND THE PANEL.

In my area, there's not an electrician that would touch a project with the
H/O supplying the material.

A permit cost is $150, heck to pull a meter and remount (for siding), the
permit is $75. In this area, I've heard to replace the service, the cost
runs 900-1,200.

You would be doing yourself a favor and not mention you want to supply
materials. As a former contractor, I wouldn't waste valuable time trying to
chase down a penny pinching lead.