SHAHINIAN ARC SPEAKERS LOVE IT OR LIST IT??

Hey all, I recently acquired a pair of Shahanian Arc's! They are missing the passive Radiators and will cost $400 to replace new from manufacturer. I don't know much about them but many people who know about these seem to like them. I know there expensive but do you think they are worth repairing? I'm debating fixing them and keeping them or selling them as is. Any advice would help. Thanks!