This whole organic food thing IMO is over rated. C'mon it doesn't matter how much the food item costs because it will all end up as poop anyway.
A lot of it is just marketing BS, but I think organic is important for any animal products we consume.
A good example is poultry.
Battery farmed poultry often goes from egg to table in a matter of months, and often a lot of artificial hormones and other chemicals are added to the birds' feed to help them grow a lot faster than normal.
The cramped conditions those animals are often kept in also massively increases the odds and occurrences of disease, which are countered with a lot of antibiotics. Often antibiotics are given as standard as a means of trying to prevent disease rather then being used to combat it.
Needless to say, a lot of those artificial hormones, additives and antibiotics remain in the birds' systems after they are slaughtered, and as such, end up being consumed by humans.
I personally believe a lot of the world's obesity, and many other 'modern" chronic health problems are directly related to the use and abuse of such pharmaceutical products in modern food production methods.