Concert tickets feel impossibly expensive. I changed how I buy them — and found where the bargains are.

Concert tickets feel impossibly expensive. I changed how I buy them — and found where the bargains are.

Getty Images; Alyssa Powell/BIWhen I noticed that Guns N' Roses was playing nearby on a random Wednesday in August, I fired off a text to my boyfriend with a screenshot of the ticket map. "Mainly not serious but," I wrote, followed by, "Is … v cheap." Less than a week before the show, it seemed Axl, Slash, and Duff had come down with a mild case of blue-dot fever. Might we be able to take advantage of it?My Guns N' Roses fandom has always fallen…