Does anyone have any advice for buying concert tickets that sell out really fast? .___.

I really, really, really, really, really, really x100000 want to go to SHINee's concert in Taiwan in September, but I know that there is a 0.000001% chance that I'll get hold of any tickets ;_____;

The system involves going to 7-11 (preferably hours before the time it goes on sale) and hogging that machine by standing there all morning... And I live in a really populated city/suburb. How convenient .___.

I always let these opportunities (k-pop artists coming to Taiwan) slip because I tell myself that there's no point: I'm not as "crazy" as those really crazy fans that camp in 7-11 overnight, so I would never be able to beat them. And after asking the lady working there, apparently even if you're first in line at the store you're at, it doesn't even mean you'll get it, because there are GAZILLIONS of 7-11s in Taiwan.  Literally, there are ones opposite each other on the same street.

This time, I decided that I'm going to try... even though chances are literally almost 0%. "To have tried and failed is better to have never tried at all", eh? xD

So... does anyone here, who has had experience with this crazy rush of ticket-purchasing, have any advice or tips or anything? :(