Several years ago I remember hearing that a replacement remote was in the neighborhood of $900-$1000 dollars. Since the car has been an orphan in North America since the 2017 model year, getting a new one from Mitsubishi might be difficult. Likely not Impossible since the car is still sold in Europe and Japan. So you can get whatever the market will bear. Keep in mind its a very limited market. Not many of these were sold in North America....less than 5000 in 4 model years (2012, 2014, 2016, 2017) the majority being 2012's. Many of these have been wrecked and scrapped. Most potential buyers will be buyers of used i-mievs where the remote was not passed on to the 2nd owner. Of those many may not care, or even be aware of the missing remote. Many others may simply not be interested in the extra cost in acquiring one, since a 2nd hand i-miev is a budget car anyway. As an example I have sold two of the three i-mievs that I had. One didn't have a remote and I explained to the buyer what the remote was for. He said he didn't care about the remote. I sold the other with the remote, and that buyer didn't seem to care either. If I had to venture a guess I'd say there are likely 20 or less people in North America that would want it. Of those I'd say they would be interested only if the remote could be had at a budget price just like the car they purchased. If I had one to sell I'd try to sell it for $400-$500, but i'd probably take less. Those are my thoughts, but of course, get what you need to get out of it.
2012 Raspberry imiev SE Premium
2017 Cajun Red Chevrolet Bolt EV
2011 Viridian Joule Chevrolet Volt
2008 Cadillac SRX
2002 Forest River Sunseeker 3100
2001 Buick LeSabre
1997 Chrysler Town & Country