Another reason to NOT shop the big box stores. They are putting all of the smaller, local stores out of business, which gives them more power to control what and how you buy things. Yes, supplies are often more expensive at my plumbing/HVAC supplier, but I get them delivered at no additional cost (think of the time and gas I save), and if I have a problem it is not difficult to resolve. If I have a question, especially technical questions, my suppliers get me the correct answers. I am not competing in new construction, so I am not competing on the lowest price. I am competing on the quality of my work.