The vast majority of the dollars in the farm bill are for subsidy programs such as food stamps, school lunches, etc. Most farmers will be lucky to see a fraction of the amount stated per farm in this post.
If you are wondering why the high prices of food, I would point you to the price of gas/diesel. The food has to get to the grocery store and someone has to pay for the transport. If you want to pay lower prices, go to a farmers market & cut out the transport middle man.