If you are having problems finding the Wilton Silicone Muffin/Tart pan to make your massage bars, etc. Wholesales Supplies Plus (http://www.wholesalesuppliesplus.com/) sells them for $10 each. Or you can check out Wilton's website (http://www.wilton.com/) sells them for $9.99.
You also may want to consider checking out Ebay (http://www.ebay.com/) to see if anyone is having an auction on this item. In the search area of the site just plug in the words silicone bakeware to see what is available.
These pans have 12 cavities. I would recommend getting 2 pans in order just in case.