Purchased for an install, never ended up using these, they are brand new. Outside of return window now, looking to recoup some of the cost. I have a total of 12 available, $45 each with free shipping (USPS) within USA. From the Micro Matic website: Foam is beer—stop wasting it when a keg empties with the PRO-MAX In-Line Beer Foam Control. Multiply the glasses wasted per week by your profit per glass to see the money you could gain with a profit maximizer.