I'm new to the classic art of DE shaving, I've just bought a Merkur 38c, new brush and an antique scuttle. The scuttle is about 3 inches across and not very deep (1&1/2 inches max) and I'm not sure what brand of soap would fit. Would all standard bowl soap refills fit? Not sure what the sizes are. I live in New Zealand and finding anything over here for proper shaving is like trying to find a needle in a haystack. So I guess I will have to buy my soaps online, can anybody suggest a good place that sells scuttle soaps ?