Right guys i've been offered a brand new RS 500 genuine bare front bumper still in wrapping any ideas what its worth? also 2nd hand genuine RS 500 REAR UPPER & LOWER spoilers what are they worth? as well as a used RS 500 front bumper minus light grills and front splitter any ideas guys as i will only be using some of these items,the rest will be sold but i have to buy them as a job lot????