I have a Works on my 87 200X and I believe it was 800$.
I paid an extra 100$ to get compression damping as the person I spoke with claimed that was not an option for that model; Rather just rebound damping. I asked to speak to someone in engineering and they just used a different reservoir and added 100$ to the aforementioned cost.
I've had the rear kick up too fast or other issues and a couple clicks fixed the issues at the different tracks.
You asked about "Works" but I will add that the AXIS shock (with every option) on my 350X MX trike seems amazing to an average guy like me.
It seems that most brands can be built well to work for you. My buddy did deal with Race Tech and their service wasn't too great (in his case) and his rebound damping still seems off to me but WIDK....
Even just your stock 30 year po-go stick getting a cleaning, oil change, and proper spring for you is well worth the cost.
The difference may be that it's harder to find good stuff to even send in as a core these days.
All our government does is distract us while they steal from us, misspend our tax $ and ruin our country