nostr:npub1w83gdx8rj870u5zs7dln8508qwcjt7u0auwu2kqvlntsu3w6ya9shc3auv 
This is a French conference, so I am not sure how to sort the cost/benefits.

No idea if the tool they used to translate me into French can go the other way nor the costs for that.

nostr:npub12naz3j6wwt5t49pf0k2rme6v7akdjch9kkhx6vuqfp5qer402apqmwfc6m