I emailed the owner of the Phoenix which is listed on ebay WITHOUT the original backglass. (and u cant buy backglass's ofcourse)
He will not take less than $800 for the machine !
I reckon without the backglass, and in the condition it is in, its worth $300 to $400 absolute tops, but he wants the full $800 and says he is in no hurry to sell it. Perhaps someone will pay silly money for it, or it will sit there forever, it is hard to say, time will tell !