Well from what I can remember the gallon of POR was around $130.00 or so for the gallon (400 Sq Ft) and the time spent spraying it was not too bad. We tried not to spray the exterior portion of the car where the butternut yellow is going. Just the inside fenders, rear quarters, entire trunk, firewall, underneath the car, seating area, behind the dash, really anywhere you can't see. Time spent to prep the car by masking and papering, etc. I would guess it was around a weeks time for the whole process. Maybe a little less. The stuff is hard to clean off and smells real bad. It works but I think it was worth it. We will find out in about ten years.... total hours maybe around 20 estimated for the entire POR process. start to finish.
hope this helps