Are there any inexpensive completely natural hair shampoos and conditioners?

I have been doing my research and I found what to look for and what not to look for in shampoos for my hair type (curly, permed, and color treated). I want something that is inexpensive, and doesn't have sulfates, silicones, glycols, parafum (or fragrance). It shouldn't be too hard to find a natural shampoo without those. Thanks in advance.