When weaning my daughter i tried to buy organic vegetabes and meat where possible.  it is not very easy to come by here but i did not think that it was terribly expensive when i compared it to ready made meals for babies.  i steamed a whole vegetable, pureed it and froze it in ice cube trays.  She is a great eater and loves vegetables.  i do not use as much organic now mainly because it is not easy to get on a daily basis.  i think for a family it probably is expensive but so are convenience foods, unhealthy snacks, etc.  i didn’t specifically use organic food because my daughter has CAH, just because of the amount of chemicals in other veg.