I've wanted a Mont Blanc Meisterstuck fountain pen for a long time now and am on the verge of buying one. In your opinion, are they worth the money?
What is the going price for a MeisterStuck these days?
That being said you get more recognition with a MB. Of course people may think you're an elite snob but hey at least they will admire your pen.
Objectively, based on the relative cost of similar pens, I would say that Mont Blanc pens are not worth it. It's worth noting that I haven't owned one and have only tried them briefly.
Take, for example, Oscar Braun Pens. They are selling the black Pelikan M800, similar in size and construction to the MB 146, for $269. The 146 will be in the ~$600 range.