I orderd one last year, early Feb '07 and got it in September '07. +/- 7 month wait. (builder DG) heavy specs
I ordered another one in mid Oct '05 and just got it in Dec '07. +/- 26 month wait. (builder MK) moderate specs
I ordered another one in March '07 and literally got a call today that is in Jan '08. +/- 9 month wait. (builder- GF) std catalog offering
Not much help?, no because it depends on the Masterbuilder, specs, etc.