I am also looking in to getting a one second hand, Is it possible to check what firmware version it has?
You have to send Sysex to get it to blink the firmware version on the two OSC lights. Or you can see on the editor but I’m guessing that won’t be available to you.
The commands are here -
http://www.moogmusic.com/sites/default/files/handy_Minitaur_sysex_commands.zip
However, the firmware is not difficult to install. (https://www.youtube.com/watch?v=fMZ0cdYkDAc&noredirect=1)
-CCQ