Almost ALL of my gun related purchased are done on-line anyway. Not even because it is so much cheaper - but MANY of the specific items I want are not in the LGS. I find that most of what they carry are the same cheap accessories that the Big Box stores carry and so when I want a specific quality item (Dewey Rifle Rods & Accessories or Rig Products for example) they must be ordered on-line as I know no LGS that actually has them in stock. Oh sure, once in a while you will find ONE single item from those manufacturers, but their extensive lines are just not carried - at least in my neck of the Woods. Yea, if I need a can of Remoil or something I know is in stock, I'll pick it up at a LGS, but if you want quality accessories, patches, brushes, etc. I buy form Brownell's, Mid South or Midway.
I find the same situation with tools, knives, boots, etc. That in itself has forced me to do on-line purchases rather than in local stores.