The oils you use and the proportion in which you use them will determine the type of handmade bar you produce. If you want a harder, softer, fluffier bar, what do you do to get the desired bar? Here is a very cool list of all of the oils and their properties.
http://saratogascents.com/soap_making_oil_properties.html
Wholesale soap sellers, look at this list. There are several oils you can use to sustitute for those oils that have been going up in price. Use this table to find matching properties and then do a price comparison.