Even visitors found the smell very pleasant. Although the bottles are relatively expensive, so I think that they are worth the money, especially since they keep very long time (for me 2 years to the bottle was almost empty). That alone, I think, in turn justifies the price.
Another positive aspect is that you can take a little control with the included sticks, which are responsible for the intensity of the fragrance in the room, how intense or less intense, the fragrance will be distributed in the room.