I haven't had much trouble finding good whisky (including Ardbeg). There are two liquor stores near me that specialize in scotch. I recently visited one of them to buy a bottle of Laphroig quarter cask. Unfortunately, they didn't stock it at the time, but they did order it for me. I had it in less than two weeks. The proprietor liked the quarter cask so much he now keeps it in stock. What I'm getting at is that it's not hard to find a liquor store that will order a whisky that they don't normally carry.