Which vintage ? Mossys would stock it for Christmas because it says premier cru on the label
Cave de Buxy used to produce better Montagne than Blason, so that's a start
viewtopic.php?f=1&t=7707&p=21881&hilit=Montagny+premier+cru#p21881I've done Buxy's Montagne 2005, 2008 & 2009. For indifferent years, Montagne can be a bit dull. Premier cru in Montagne means more than 11.5% Alc from free running juice, see previous posts on this matter. Not much eh !
When Majestic had a clearance offer on the Buxy 2010 (same price point), I tried to score but it was all sold out by the time I got there. 2010's would drink well for a while, and mature as they should. The 11's and 12's don't know. Montagne '06 was little more than french chardonnay, they said.
Just don't know these recent vintages - sorry