Wally- World! 20 bucks and I got one that has a wisk attachment as well so you can do whipped soap or body butter. It's a hard plastic for the attachment. I had a stainless steel one before and it would scratch up my crock pot.
Amazon has the Proctor Silex that they also have at Walmart, for only $13 and they also have the Escali Primo scale for $24. Buy both and get free shipping! I am ordering mine today.