Depends entirely on whether or not you are a fan doesn't it?
To me,no matter how good she is, it wouldn't represent value for money, I'm not a fan, but my wife is, and would love to see her, but not at that price.
It's about supply and demand - a live show with Ms. Streisand is worth what her fans- as a rule at the upper end of the ecconomy - would like to pay to see her.
It does depend at the end of the night whether she sang well, and for a decent length of time, which remains to be seen.