Techniques of Organic Chemistry - 1973 was released on:

USA: 1973

Organic products are more expensive because the techniques used to grow organic foods aren't as cheap as the techniques used to grow inorganic ones. This is because, over time, methods were found that allow mass production of crops; however, these methods do not allow for organic food. Organic food must be grown on a smaller scale, pushing up the cost.

eat organic. end of story haddadj

Non-organic farming, usually called conventional farming. uses synthetic pesticides and fertilizers. Unlike organic farming, GMO crops can be grown. About 95% of US crops are produced using conventional farming techniques.

All produce is organic. The term, organic, can be very misleading. It does not imply that produce that wasn't grown with "organic" farming techniques isn't an organic product.

Now, with regard to produce that is grown with pesticides added, this would be less healthy than produce grown without.