Chin Spoiler?

Was looking to get one for my 69 Dart as well. Spoilers by Randy are $160 shipped.
Like the cheaper alternative above (+$18 shipping)... but saw another option ($35 version) avail:

http://www.rickscamaros.com/camaro-spoiler-front-1967-1968.html?crosssell=Product_Upsell

Also see they sell an "bracket attachment kit" but Im sure it can be fabbed. They sound like they are plastic? Wonder if anyone has ordered/used one of these?
Have always gone by YOU GET WHAT YOU PAY FOR. $20-35 has me skeptical but may be worth a shot.