AFAIK I am the only one locally rebuilding coil-overs. most cases I charge $150 and if they need parts whatever those cost of those parts. Cusco is most popular in the Subaru community, and has a good reputation.

I've had to rebuild/replace a few of the inverted dampers, actually they have a bad vent design and don't handle mud well, but if they can be fixed I can do it.. can you bring the broken one by? I check them out for free.