Pay for plumbers, gasfitters and drainlayers depends on experience. We offer you the highest quality workmanship and services for. I had a very slow drain in my shower that i had tried other products to unclog with no success i tried this product and it worked very well the instructions are good as you mix with water in bucket and and pour in the drain simple as that as you do not need to. What an amazing group of folks it has been a pleasure to see this company evolve they are doing it right!!.