I recently used Ticketmaster to sell tickets for a ride-in to a motorcycle show. Once the language and ticket pdf files had been altered to suit my event, I really didn't have to worry. I had a small issue after upgrade with payment buttons occasionally failing to appear, but really nothing that caused me any major concern. I am pretty much a newbie to using Joomla and therefore not really familiar with using extensions either, but I made it work right from the start. The file tweaking I mentioned I managed to work out for myself, but I also made sure I researched well in the forum too. A lot of questions are answered there. Robert has done an amazing job and continues to develop the product. It has the potential to rival some of the more expensive offerings, and in some areas it already does so. If you are looking for a neat and simple solution, and are prepared to have a little bit of input yourself to make it work, then go ahead and get Ticketmaster.