I know Dieu du Ciel distributes to the US (not sure what states). However, does non-ba Peche Mortel have any trade value?
http://beeradvocate.com/community/threads/peche-mortal-trade-value.74400/#post-1060758 To sum up the thread: Limited seasonals, other limited shelf stuff that comes and goes quickly should get it done. Phenomenal beer!
Extremely little. I'm not sure what areas of the country don't get it by this point, but to them it would probably be worth local shelf beers. I mostly just pick it up occasionally to toss it in as an extra (and to drink myself).
Apparently in Canada it flows like water, and is pretty cheap. I literally gave up $10 in locals for a 4-pack of it. Awesome beer though.