Some are pushed because some believe in them, some its their job, other you are pushed away from for various reasons. We dont need to go there but sometimes you have to be a "good guy" about your purchases. IF you call somebody or someplace and constantly and are getting info, asking questions, then come time to buy, you make your purchase elsewhere, thats hard on a business. Now I have no affiliiation with any of the businesses mentioned, but if I am calling to a place such as EC and asking questions about products, trying to figure out how to make it work and am getting advice from them, YES I will buy parts from them!! Its called customer service guys. No Im not made of money and none of us are but I believe you have to support those that support you. So somebody taking the time to give measurements and tech advice to see if something is even feasable for me, before the sale is made, Dang right if it works I will buy through them!!