ISFLexy

So I found locally a BBK Grand Turismo brembo kit, 6 pot front and 4 pot rear calipers, all brake pads, all four slotted rotors and 4 S.S lines all in great condition and asking $2800 Cdn for the kit.
First of all is that a reasonable price? And second, it's meant to be direct bolt on to a '13+ GS350 awd, so would it fit onto my '14 IS350 awd? I know they are very similar just want to confirm though.
Thanks in advance!