I recently got a call from friend who is in the HVAC, plumbing and electrical supply business. He asked what my thoughts were on what a supplier’s most marketable skill was to the contractors they serve. I really thought that was an interesting question. Contractors today have never had more choices when purchasing materials and goods. Many have turned to purchasing from very nontraditional sources such online networks, big box stores and home improvement centers as a source of low price (and low quality) goods.