Brands of Shampoo & conditioner

What brand of shampoo and conditioner do you use? How much do you pay for it?  Am I the only one who has to buy salon shampoo and conditioner so I don't get build up on my scalp? I mean some people can walk into walmart, buy suave and have the nicest healthiest freaking hair and scalp. I can't do that with out having the worst case of dry hair and scalp.