I know mine is for a 94-98 and not a new edge but I found mine on Ebay for $150. I'm pretty sure they sell S281 wings for the new edge mustang also. I've had a saleen brand and a keenan (spelling?) on different cars before and this one I got off of Ebay fits better then both of them. The company that sold mine doesn't list auctions for them all the time but maybe try checking every so often?
The pic doesn't show the carbon fiber finish to it very well, but it is 100% carbon fiber....