The better alternative is to look up a good cocoa butter supplier on the internet.
When you receive it, melt it in a bain-marie, (or put a little water in a saucepan, put cocoa butter in another and sit it on top of the water, melt slowly) mix it with a good quality olive oil or almond oil, tip into a mould and let it set.
You can also use beeswax if you are having trouble getting it to set. I had to tinker a bit to get the recipe right, and still make the odd mistake. However, you should end up with a good sized amount of body butter, which works a treat and is relatively cheap (half a kilo of cocoa butter should be around £4-5 or so).