I have the same problem with single coil RDAs. No shops around me stock any. Most of the employees say that I am stuck in the past and need to upgrade to duals, or that I would be better off with a drop in coil sub ohm tank. I just tell them "I guess my money will stay mine" and walk out. I have only bought one or two of my RDAs in person, and I'm forced into online shopping. Some of these vape shops just don't realize how to maximize profits.