Food Prices in Relation to Gas Prices

For years, the cost of produce has skyrocketed, and they've been telling us that it's not because of the product itself, but the shipping costs are going up due to rising gas prices.

Now that gas prices have plummeted and are almost half of what it used to be, I'll be my first born that bananas, for instance, won't drop down from 69 cents per lb., nor will anything else.

Thoughts?