Seems a bit pricey, but I'm sure it's effective. A bottle of iso will get me two or three cleans of two mouthpieces and the capsules, and it costs less than $5. There was the upfront for the ultrasonic which I think was around $80, but I also use it for other things outside of just by vape cleaning, like tools and stuff. Since I put my stuff in a baggie filled with the iso, and then put that in water, I don't have any cross contamination.