Opportunity to buy Demo Magico M2?

I very much doubt that break in is an issue, particularly at 250 hours.  It is much more likely a set up issue at the dealership, including a difference in personal preference between you and the dealer.  Of course it could be you don’t like the speaker.  It might be asking a lot to have the dealer do a set up with your amp.  Done correctly, it is more than just a matter of dropping in your amp; this involves re-tuning the setup.  I would audition the M2 as it is set up at the dealership.  If it sounds to your liking, you at least know it is capable of sounding good; if not, you could explain what you don’t like and the dealer might be able to make some speaker placement adjustment.  I would do at least a portion of the audition fairly close to the speaker (near field listening) to minimize the contribution of the room in order to get a better sense of the speaker’s qualities.  If you are in doubt after the audition, walk away.  If you don’t like the sound, no matter the price cut, it will never be a bargain.

You likely would never get a dealer to agree to an in-home audition, but you may be able to negotiate ahead of purchase the terms for any return if you are not happy.  Obviously, the terms would have to make it worthwhile for the dealer to go through the trouble and to take the risk of damage and to incentivize you to NOT return the speaker, but that would afford you some protection.

I know a dealer who took back a pair of speakers he custom designed and built for the customer that are gigantic- something like 4.5’ x 9’ x 5’ - that required the rental of a small tractor to make the delivery.  I have no idea what was the price for the return.

Perhaps you could visit the Washington DC area and audition gear at Command Audio and Video.  They carry Rockport, Magico, Focal and Devore speakers, and their electronics include Gryphon.  

And if you do go there, you are also less than 15 minutes from Deja Vu Audio, which is an entirely different audio experience, but, you might be pleasantly shocked by the sonic alternatives.  In the price range you are looking at, Deja Vu makes custom systems (vintage horn drivers) that are vivid and alive in ways conventional speakers hardly ever achieve.  The electronics at Deja Vu are also radically different (low-powered tube).

Both stores make this a good location to hear great sound.

I haven’t been there in a while, but, I liked the people there.  None of these stores employ hard sell tactics so a visit is always pleasurable.  
 

I went to Command today to pick up a new backed up hard drive for my server.  While I was there I was invited to hear a new Isotek power conditioner meant to be used with amplifiers.  It just so happened that the system was a Magico A5 powered by the Gryphon Diablo 300.  The system had a very tight and precise bottom end that I can understand that some might feel is a bit light in bass (I don’t think so myself).  The system is an imaging champ, particularly, with respect to very specific front to back image placement.  My principle complaint is that the overall sound is not as meaty (touch thin) as I like, but that is common to most modern high end systems.  Still, overall a pleasurable experience.  I was surprised by the power conditioner—it made the upper midrange sound a bit more forward and focused without the sound becoming brighter or harsh.  This was a significant improvement in a system whose power already goes though a massive isolation transformer, dedicated panel, etc.