Colorway rarity is the primary driver, and unfortunately this is the most common colorway - thus the cheapest.Probably at least $5. Guaranteed...
Lol
Alone, the time machines seem to go for $800-1500, but I don't know why the range is so diverse.
Without more pics I would place the MM in the $600’ish watch itself, $800’ish with box and full links.
-I would be a buyer at that price as well, once it’s properly listed on the exchange.