For $15.99/month, you can enroll in Spark Natural's Oil of the Month Club. I haven't done this yet, but I think it's time to start. You'll receive a 15ml bottle of the oil of the month (you can see the year's oil schedule before), you get free shipping and tax. Most oils are more than $15.99 per ml, so this is a great deal! You can cancel at any time. That'd be awesome if rose essential oil was on the list!