DM Toys / Modelbahn Union are a great model shop for N Gauge, particularly if you have to shop online. They have a good range of products from different manufacturers but are clearly trying to fill gaps in the market with their own products. Unfortunately, there are no model railway shops anywhere near me, but I can get orders delivered from DM Toys in 48 hours from Germany to France, where it takes about a week from the UK. I have found their D&H decoders very good and exceptional value.