I get my soaping supplies mostly online. There isn't any place local that sells oils and butters and fragrances. Here are the suppliers that I have purchased from online.
Bramble Berry in Washington State
Anne-Marie the CEO has a great blog and she does Soap Queen TV videos mostly which focus on M&P soapmaking.
http://www.brambleberry.com/Default.aspx
Magestic Mountain Sage in Utah
http://www.thesage.com/
Wholesale Supplies Plus in Ohio
sells nice silicone molds and fragrances for free shipping!
http://www.wholesalesuppliesplus.com/