Main issue here is that very few PF's are available as repro.
When im quoting a PF restore, im always aware of the fact that at some point it would be easier to go get another made. I can honestly say that the amount i quote is never reflected in the amount of work that has gone into it.. were i to do this for a living i would have to double my prices - easy.
BUT... there is a HUGE difference between restoring and restoring... in other words a good clean up and touch up makes a PF really shine again - looks awesome.. but if a make a PF look like factory issue again, then almost every single part must be redone... takes months of work to do a single PF.

If i had more than  1 at a time of the same game then this is much easier and i can change my methods to suit multiple restores.

Or as well if there is a brand new spanking clear coated PF does it warrant a change out over the original? Is the orginal the best unless there is no chance of a decent result?

Depends on the amount of work required to bring the old one back to life again.... one simple gauge is that IF there is flaking of the paint, then you can guarantee that by time you have removed the flakey old paint - your problem has expanded 3 fold ... bear this in mind if attempting a restore - what you see is not your problem... its bigger than you think!

Not all PF's should be CC'd - if customer demands it then it has to be done, but personally this really is a last resort.. i try NOT to do it.
 If a touch up is done - no matter how big it is then automotive acrylic will hold up well if waxed.
If necessary then "spot" protection can be done - no need to cover the whole PF and also no need to use CC
Bear in mind that IF you CC a whole PF especially EM or SS machines - the game will never play the same again.. theres a lot of charm lost on a CC'd PF and "charm" s what its all about with many machines