Jurekozuh

The other day on the television I saw a commercial for a ticketing agency that did its business on line. The theme of the commercial was that you really need to be careful on who you buy your tickets through because they could be fake tickets. That would be horrible if I bought tickets to a show, and they usually are pretty expensive, only to find out I bought fake tickets. How do I make sure that the site I am going through for a Ticket Broker is really an official website? Is there any type of guarantee on the tickets or the show?