I don't see why any dealer, anywhere, in these days of rampant computerisation, should charge a car owner for accessing information about that car, especially if it's something as simple as a radio PIN. I recall an incident many years ago, which happened to a colleague of mine after he had bought a Fiesta RS Turbo from a dealer on the Mainland near Aberdeen. It was about the start of when radios became coded and for some reason or another the battery went flat and the radio lost its coding. It turned out that the code hadn't been entered in his documents, so he went to the local Dealer in Shetland for help. They were unable to help as they had not supplied the vehicle, not being an "RS" dealer. He phoned the supplying dealer but they had no record of the code either. They said the only way to resolve the situation was for him to have the radio replaced. The local dealer wouldn't touch it as they hadn't supplied it (and had their nose out of joint!) so he had to take the car on the boat to Aberdeen (14 hours at their expense!) and go back to the dealer. When he got there they had the new radio all ready to go in and it was the work of moments to remove the old one. When they got it out, there was a sticker on the top of the radio with the code on it!! You couldn't make it up!
2008 2.0 TDCi Zetec