Jim decides to open up a bike shop.  The most common repair he does is fixing bike tires.  He charges $20 for this and it cost him $5 in parts.  In one month Jim does 300 of these repairs.  He also does 2 more complex repairs for $300 each and cost $50 in parts.  He also sells $2000 profit worth of things from his retail shop.  If rent and other fixed expense for the shop is $4000 a month how much profit did the shop make?