I don't know much about Boxster pricing but this struck me as being quite reasonably priced for an 06 low mileage car....
http://ucl.porsche.de/ucl/plsql/uk/clients.show_dlcar?sid_=6559337915188D77DD9357B59FDCA50&pnr_=4&lnr_=1&caller_=SHOW_DLCARS_EXT
Migration info. Legacy thread was 109596
http://ucl.porsche.de/ucl/plsql/uk/clients.show_dlcar?sid_=6559337915188D77DD9357B59FDCA50&pnr_=4&lnr_=1&caller_=SHOW_DLCARS_EXT
Migration info. Legacy thread was 109596