Question about a Lexus?

My customers have always been fascinated with the Lexus ISF ever since it's first release DBScar-DI Diagnostic Connector. My customers plan on buying my dream car when my customers is finacially ready. The thing is, My customers rarely see a Lexus ISF on the street and that gets me really curious on why. Is there a reason why they are barely seen in the streets? And also, what are some pros and cons of the ISF? Your answers will greatly be appreciated.