I would think that Alpine Village would have them. Maybe even Berolina Bakery in Montrose, but I would definitely give them a call. Schreiner's is a German Deli next door to Berolina, they may have it, but I would not guarantee that.
I've had one from Whole Foods in years past, but can't recall if I have seen them there this year since I wasn't looking for them. I am a big marzipan fan too, and was happy with both the flavor and texture in the WFs stollen and the nice amount inside. Good luck!
Funny you should mention Christmas stollen--my husband and son just brought home a loaf from Berolina's today. It ran about $12, by the way. They make Lucia buns every Christmas time, also, and I love them--fragrant with saffron and honey.