Tony decided to rent a small cottage.  The master bedroom and bath totaled 500 sq ft.  The 2 guest bedrooms were 200 sq ft each.  And the kitchen, guest bath and living area totaled 600 sq ft.  If Tony spends $3,000 a month on rent, how much money is he spending per sq ft of house?
Please reason step by step, and put your final answer within \boxed{}.
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