Stamps in a book is kinda 1950s. Every time a BMW motorcycle is seen at a BMW dealer's service department for any reason (warranty, recall, service bulletin, damage repair or scheduled maintenance) there is a computer record generated. Every dealer has access to the records of every bike. All it takes is the VIN. I would ask the seller to get it. But if you bought a bike from me you would be getting a well maintained machine with virtually no records at BMW. My bikes are only seen by a dealer for recalls, so what you see, smell, hear and feel are more important than a written record. If you are unsure of what to look for then find someone that is more knowledgeable. 07s were subject to final drive issues so that should be well examined. Look for play in the bearing and/or indication of oil leakage. There were recalls to replace the electronic ignition immobilizer, rear wheel flange and fuel quick disconnects (or reinforce them). They also had a software update to make them run better on 87 octane fuel. (these all applied to 07 RTs and Rs and I am assuming they applied to the GS as well).If the seller has the book with service stamps and records, and there are no obvious problems, I think yes! A fair price in my opinion.