This comes from a good friend, and it sounds absolutely wonderful! Takes time but I think this is well worth it. On my to try list.
Blue Crabs would cost about 200 Baht for 12 decent sized crabs, for 6 servings (this is based on 6 stuffed shells and 1 stuffed shell per serving), this is about $1 per serving. Overall, not bad, but can be time consuming to put together.