So the mistake I made was that WGSA0019 is difficult to add a gold band. It is apparently special order and I was quoted by Cartier that it is an additional $30K. So the total will be $22,700 plus an additional $30,000 for a total of $52,700 before taxes. If I had bought the WGSA0018 from the beginning it would have been $44,500. Now does that seem reasonable to anyone??? I have to pay an $8000 penalty for not buying the WGSA0018 to begin with? Is there an alternative way to get that band without paying the extra service charge???