I pay $5 a half gallon...and I get my choice of Jersey or Guernsey, I much prefer the Guernsey.
On the other hand if you are making your own orange juice from fresh naval oranges, at the common rate of 1-2 lbs of oranges per cup of juice(oranges vary in juiciness) and Navals were 1.29 per lb this week. That's 1.29-2.58 per cup of juice. And a whopping $10.32-20.63 per half gallon.
Now that is EXPENSIVE as hell.
I ate an orange yesterday. But I didn't bother juicing the damned thing.
(I had used the zest in a lovely baked/braised pork recipe the night before.)