At one point, I built out clothing rules, with the base cost relying on type (just jeans & tee, work suits, that sort of thing) and a multiplier by manufacturer (Wal-Mart, Target, Gucci, etc.). It worked pretty well conceptually, but I never really got a chance to extensively play-test it. You could get dirt-cheap threads for ¥10, or unique cutting-edge fashion for over ¥10,000 ... armor extra, but you could always have it built-to-fit to help conceal a heavy pistol or smaller ...