I decided on a more complete green drink, since I am not a cook and don't like to prepare things (like salads). So for me it is part of my food intake every day, and indeed most complete green drinks are not cheap. When they are cheap they have a lot of fillers. Making your own is probably the answer.
This is what I use but always looking out for cheaper, better. I do order 2 bottles at the same time to save on shipping.