I'd bet Holley can undercut a lot of the smaller, more boutique parts manufacturers just because of economies of scale. It is not a surprise to me they can spin this up so quickly given their huge name in aftermarket exhaust for domestics (Hooker headers). There is more that goes into the FR-S headers, but looking at these Camaro V6 units I have high hopes for the pricing:
http://www.jegs.com/i/Hooker-Headers...ductId=3354730