I would absolutely love it if we had a sandalwood soap. Sandalwood is one of my favorite scents and, years ago, I not only used sandalwood soap, but I also wore a sandalwood perfume.
Yes, I was all about the sandalwood but, alas, we will never carry our own sandalwood soap.
The reason for this is that we only use essential oils in our soaps and some of these oils, such as sandalwood, are incredibly expensive. If we used these more expensive oils, we would have to charge what we feel would be an unreasonable amount per bar of soap and that's not something we're willing to do.
So what's the difference between essential oils and fragrance oils? Essential oils are oils that are directly extracted from plants through distillation, whereas fragrance oils are chemical mock-ups. For example, if you purchase a product that uses lavender essential oil, you know that the scent is actually lavender. If you get the fragrance oil version of lavender, you have no idea what combination of chemicals you are actually putting on your body to achieve that scent. Also, many fragrance oils contain phthalates- known endocrine disrupters (for more on phthalates, read: http://safecosmetics.org/article.php?id=290).
It can seem quite overwhelming at first when you start the switch to truly natural products, but once you do, you'll definitely notice a difference in quality and in the way your body responds to them.