Joe's Fish company sells fish caught by the pound at Pike's Place in Seattle.

They sell the fish for $$4\mathrm{.}00$ per pound. Alternatively they could sell directly to upscale restaurants for $$5\mathrm{.}00$ per pound but would need to spend an extra $25$ cents per pound to further clean and ice the fish for delivery. They would have to hire two delivery people at a cost of $$1200$ per week each and spend $$1000$ per week extra on truck rental, fuel and insurance. They would no longer have to rent the space at Pike's Place for $$800$ per week. Should they change their business model and start selling direct? We presume they were operating profitably in their original venture.