I just purchased an Audi A3 for my son and when it came time to sign the paperwork I knew I was going to get the pitch for extended warranties and protectant sealers. They wanted $561 to apply the perma plate. Isn't it funny that it cost half as much to do an Audi as it does a Porshe? Of course I told him no thank you and had to initial a document to decline these options!