While I often purchase tickets on Goldstar for events, I cannot stress how important it is to do some research before purchasing there. For certain events, it is often cheaper to find tickets through the venue or a group who operates out of the venue. I wrote about this before.
The following applies if you are under 35-
The Flying Dutchman is playing at the Kennedy Center. If you join Generation O you can purchase tickets for $25 for rear orchestra, $35 for side orchestra or $50 for prime orchestra for March 20th or 25th. Now, if you go to Goldstar Events, you can only purchase ticket for the same nights (plus the 15th) for Premium Orchestra- $85.00, Prime Orchestra- $70.00, Orchestra- $49.00, First Tier- $49.00, Second Tier- $34.00. PLUS a service fee of between $6.50-$10.00. Ouch.