Okay, we'll go with highest numbers in the story and assume the 45 pound king pictured is the fish:

$12/pd for the unprocessed fish is $12 x 45 lb = $540. If we assume the fish is gutted on the boat this would (according to figures provided by a chart of salmon yields posted on the Chefs-Resources website) drop about 3.6 pounds on this fish, taking it to $12 x 41.4 lb = $496.80.

At $75 per pound for fillets, let's assume the finish, skin-on fillet (again, according to the quoted charts and 45 lb full live weight) can be calculated at:

Fillets from the king are 24.75 lb (55% of live weight), $75 x 24.75 lb = $1,856.25 for both fillets.

From fisherman to the fish sailing through the air in Seattle we add $1,856.25 - $496.80 = $1,359.45 in costs.

There you go.