NO. What did you expect? A digital camera is a rapidly depreciating commodity, the M-D is a small niche product within that rapidly depreciating mass of other cameras.
I would say (totally guessing) the M-D has less than 1% of the Leica share, so 1 in 100 potential M240 buyers will potentially, maybe, want to buy an M-D. Will they pay more for it than a used M240? I wouldn't.
The only way you'll get a good price for a used M-D is to wait and/or be lucky. Waiting is a double edged sword, it might go lower (likely) but if they stop making it and don't announce a successor, then in might just if you're very very lucky and you have a mint example with all the paperwork and box go up again (unlikely). Sorry.