“I am the original owner of the Bondi Blue iMac Rev C, which is usable and in excellent shape for it’s age. But this can be a tough value to determine, there isn’t a blue book or single exchange available for old Macs. Being familiar with old Macs and visible on the web, I understand why folks are asking me this question. The Vintage Mac Museum tends to get several emails per month from people with older model Macinti, looking to sell their systems and wondering how much they’re worth.