I think new seals are only about $20 for all four corners, and it should take a day or less depending on your skills and available tools to clean and rebuild them. Once that's done and you put new pads on, they will be as good as new. Better than new if you get a set of slotted or drilled rotors while you're at it. You were going to spend the money on the calipers anyway.
KuoH