Spain

I typed in

fish "cooking vacation" Spain

for a Google search and came up with what looks like a winner. Here's what their website says:

6 nights in elegant boutique hotel in Madremanya
5 lunches, 5 dinners, all breakfasts
4 cooking classes with chef
1 cooking class in private home
Winery and olive oil mill visits in Alt Empordà
Catalan cava and wine tastings

Catalan cuisine is characterized by the wide variety and incredible freshness of its often local, traditional ingredients. Ingredients commonly used include prawns, shrimp, squid, sea urchins, salt cod, anchovies, wild game, sausages, veal, free-range duck and chicken, rabbit, peppers, tomatoes, wild mushrooms, artichokes, eggplant, rice, and broad beans. The northern Catalan cheese landscape is diverse featuring artisanal goats and cows cheeses.
The cuisine is centered around four principal sauces: alioli, sofregit, picada and samfaina. After learning to make these sauces you will go on to incorporate them into a number of Catalan dishes. Typical dishes include suquet, a Catalan bouillabaisse, an enormous variety of fish and shellfish, escalivada (roasted vegetable salad), mar i muntanya (surf and turf)–pairing lobster or prawns with chicken or rabbit–escudella i carn d’olla (Catalan stew), pa amb tomàquet, and esqueixada.

The cost looks like ~$4000. Flight will be about $1,400. Then back to Barcelona for a week, about $1500. Almost $7000. Heck I can do New York for that.