There's also 2 wing type on Ebay, I see the High Wing spoiler listed at $500 painted & shipped. $100 less unpainted (GM's spoiler).
There's also one called Sawtooth, it's $350 painted & shipped. I've seen this one on a yellow Camaro & it looked pretty good, just not what I had in mind.
Mine was $512 painted & shipped. Installation just takes some time while it's warm & pliable but I love it ! I just don't think the stock spoiler was enough, but that's just me....& a few others ? Hence this thread ?
I got mine from Classic Design Concepts.