I needed 25m of 22mm Speedfit barrier pipe quick. I checked around various websites and because I had a diamond club card B & Q was quite a bit cheaper than others that had it in stock too. As I could pick up several other unrelated things too from B & Q it was worth the 12 mile round tripto fetch it all. When I got to B & Q there was none on the shelves, an assistant checked everywhere that they might have some in the store for me and told me they haddn't had any in for a while (I took that to be days). So an unplanned trip to Screwfix to get it, which would have been a 3 mile round trip if I just went there to start with. So beware, don't rely on the internet telling you things are in stock, call the store and reserve it before making a trip out.