Has anyone purchased any of these from the TT Shop? Clicky Just wanted to know how big they are (length/width), cos they do 2 sizes Large & Small. I want to put 1 in each of my back windows but didn't want to buy the small ones if they were too big. Is this the best place to buy um from? Or do you know anywhere else that may do um cheaper? These are £9.99 whether you buy the Large or Small ones!