At the considerable risk of continuing to sound like a broken record please think quality before price when buying a used Porsche. You have to know a lot about the car beyond price. In fact price should be the last part of the equation. See also
The Cayman Club - FAQ: Questions & Answers
Almost everyone asks us if this a good price for a used Cayman and many of those posing the question have not seen or driven the car so the answers from those of us who know nothing about the car or its history can only be based on guesses so it is in your best interest to take what is said as only a part of your due diligence.