I'm primarily a Sig guy, but I'd heard good things about M&Ps so I decided I should give one a try. I found a M&P 9 Pro at a good price at a gun show on Saturday and grabbed it. I was feeling pretty good about my purchase until I went over to the vendor selling magazines to pick up a few extras. He had a few - for $99 each. I asked why They were so expensive and the response was that S&W wasn't making anything but 10 rd mags, so no one could get these anymore. Can this be true? What gives?