I bought this along with 2 other 10ML essential oil blends this summer. The sales lady said the current promo would get me a free wooden display bar if I purhcased 3x10ML oil blends. So I bought 3 different blends and at checkout the sales lady said they ran out of the promo bars! She asked me to check back in a week. I have been checking back and they still don't have any and this time the sales lady said the bars they have are for 20mL only. Felt like a scam and I was disappointed.