I can remember when a concert cost about as much as the record did.  Those days are long gone.  I did Mika yesterday, I had a crew of 18 all making between $200-400+ for the day, they had 6 people with them, making the same amount.  So, what's that?  $7000 just to get the stuff off the truck, set up, checked, and back on the truck (and the cost of renting the truck, driver and fuel is huge).  Add a security staff of about 60, a house staff of another 45, plus bar and food servers, and clean up - and I haven't even paid the band yet.