Quite a low one by the looks of things.

Coincidentally, I acquired this machine in Manchester. 
This happened in 1989 when my employer, the videogame company Binary Design, sold off some of their hardware to employees. 
I picked up the Einstein for the princely sum of 30 pounds, but I can’t remember whether that price included the TM01 
monitor that came with it. Both the computer and monitor are fully functional today and I don’t think I have needed to 
do anything to keep them in working order. The only modification I have made was to install a second 3”disk drive I picked up recently.