I have taken them apart, cleaned, lubed and put them back together before. I found a few (3) sites that re-web them. This one in particular
https://www.safetyrestore.com/webbing-replacement, is likely the one TKCR is using based on $200 fee. I'm thinking, I will send them here and have new black or charcoal webbing installed. When I get them back, rather than painting the plastic black (which will show the tan underneath when they get scratched), I'll have my local LineX guy spray them black. It's what I used on my speaker box and the result is simply amazing. Since I'll be fabricating a custom center console, I had already planned on the LineX approach for most of that except for the upholstery parts. It would tie together nicely.