Hi Martin
I can't help you with a location, but ceramic will work just fine for your shower stall. Ceramic wall tile for around $2 sq ft is usually pretty good. There's lots out there for 99 cents a foot too, but that's the bottom of the barrel(though it will work also). Check out a tile shop in your neighbourhood...they can probably get you everything you need, and it's good to help the little guy make his house payments.
