Keller aren't a name that comes to mind from a U. K. perspective. I found them as a chance price hunt on a particular shoe, and decided to give them a try. Price was great, website worked correctly with realistic stock information. There was the offer to join a discount club that you do often seem to see on German webshops (We tend not to get this in the UK so it's a bit of a novelty). Delivery was by UPS and faster than promised with obviously well treated box and items well but not excessively packaged.
Recommended, I'll definitely be looking here again.