Perma Plate is definitely worth it if you are the dealer. I actually don’t think they do anything different. I once sold a car to a guy where I made no profit on the sale and he was a pain in the butt to deal with. He goes into financing, gets an extended warranty (even though he will probably not keep the car past the normal warranty), the leather protector and the paint protector. I always checked over the car after the detailer’s prepped it for delivery. I noticed nothing different in how they prepped it, but a $2000 profit for the dealer isn’t so bad.
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