Gimmie $800 I'd go watch her
Wife and I were discussing this very thing. We figure she would have to pay our transportation cost, lodging costs, and meals. We would have to have seats close to the concessions stand so we could have a snack during the performance. On top of this, about ten grand, each, for pain and suffering. So, all told. about 25,000 should do it. In truth, I wouldn't pay much to see anybody. I've taken my wife to a couple of concerts, on a date, and even enjoyed a couple of them, but they are not a thing I seek out.
BTW, the girl who wore the meat dress (Lady GaGa) actually has a very good voice and real talent. She doesn't need the gimmicks and should avoid them. Her duets with Tony Bennet were pretty easy to listen to. Nonetheless, I wouldn't pay to see her either.
There are some rifle matches I'll spend a bit to attend, and I'll part with some money for fishing trips or similar vacations, but concerts just are not high on my list of ways to spend my time or money.. GD