You might try to calculate how much it costs to serve just one cup of
coffee and a muffin so you have some idea how much to charge, depending on the
volume of customers and the cost per unit.
Calculate in: rent, labor costs (minimum wage? fringe? unemployment
insurance? workers comp?), sales taxes per unit, vendor costs, utility costs
(electricity, gas, heating and air conditioning, water, sewer), sanitation
costs, the amortization of fixture costs, disposable material costs (napkins,
condiments, coffee, sugar, milk), administrative, legal, bookkeeping, clean-up,
cleaning materials, licenses, permits, insurance, debt service, construction
costs (materials, permits and labor)... Many costs are fixed, irrespective
of the number of units sold. Material costs go up with each unit sold; however,
certain volumes might generate discounts
From that you can calculate how much volume you need to break even or even
make a profit. Then divide that volume by the number of seats (assuming no take
out) and you can calculate how many times each seat must turn over in a
particular unit of time in order to provide that volume. That will give you an
indication of how much paying business you must do in
order to stay in business.