“fixing” a SEIZED brake caliber for $3 bucks

• If the caliper is left on the car like this you will never get all the dirt out. 
• The piston is chromed or otherwise trated, simply "polishing it" won't workfor very long. When you do this at least change the piston as well it is not that expensive.
• putting new pads on these disks is not a good idea, either change or, if the wear limit is not reached, get them smoothened out. New discs are less expensive than one may think.
•  Reconditioned single piston brake calipers are about 60€ a pop, they have been done by professionals and come with a warranty, always change both sides.

To sum it up; if you need a video like this to explain the work to you better let somebody do it who understands the job!