So your entire clutch assembly quote has gone from $1600 to $3000? That doesn't sound right
For comparison, I am getting an entirely new 6MT transmission assembly plus install for about $3K. There's about $700 of labor, so let's use that number since it's basically the same work. A nice street clutch and flywheel should only run you $800 or so. CMC is about $100. CSC is gonna be $400ish for aftermarket solution. That means you should be around $2000 out the door give or take a few hundred depending on the regional shop rates. But not an extra $1K