Summary:
Bought a used SRT6 from a PA dealer w/ PA inspection a few weeks ago.
Brought it to Maryland
Had it inspected in MD today
My mechanic just called and told me that the rotors were below min spec. so it didn't pass inspection.

He wants $540 to change the pads and rotors. +$75 for the inspection.

What do I do?

Can I upgrade my brakes and do it my self for $500?