There are less expensive aftermarket replacements (much less).
That's a part which is seldom replaced with a factory piece, similar to the exh. system as a whole. Try pricing a factory exh. (if avail. currently at all) along with the labor to drop the rear suspension for it's installation (put on first at the factory). It's almost NEVER done, so the price for doing so is astronomical.
"Rubber Side Down"
Focus Takeover #003 / Tarbo Fan #003