Hiho,
i havn't fished on europa in a long while but my database is telling me i have 53 king crabs left. If you have 40 crusty lobster i'll trade them for the crabs. 20 crusty and 20 of any other kind are fine aswell. Up to 53 are up for trade if you are that deperate. The other stuff should be easy to come by.
kind regards,
Kas Althume