Cheap Tickets for Concert

I used Stub Hub to purchase tickets to Luke Bryan's 2nd sold out show in Nashville, TN at Bridgestone Arena. The tickets were for the very top section and where only about $30.00 a piece the week of the show. I was nervous about purchasing tickets through a site like this, but other people I knew had purchased through this site and had good experiences. My tickets were immediately emailed to me (although they did have name of original purchaser on them, which worried me at first) and they worked just fine. My only real concern was the people sitting next to us at the show either had tickets for the same seats or where in the wrong section (they came in late to the show) they had to split their group up and sit in front of us win seats that where empty but they didn't seem to mind...so I don't know what the issue was with their tickets. But my tickets and seats were exactly what I was told they would be and delivered when they said they would be.