Not sure if I am allowed to post this here, but there is a site that sells MWF products, incl. the shaving soap, the ceramic dish and refills, for incredible good prices. I ordered four pucks and they are $32 incl. shipping from the UK to here, makes it $8 per puck shipped!! The ceramic bowl is about $30 shipped, not a bad deal.
Wingham Wool Work - Quality Fibres and Accessories