I found the price information in Jerome's article of interest. Saudi is not offering a discount for their heavy or sour as one might expect.

I actually wouldn't expect them to increase their discounts. Why would they undercut the competition, when there is no competition?

A guy goes to the butchers to buy a chicken...

"How much for a chicken?"
"$4 each" says the butcher.
"But they are only $1 at the supermarket"
"Why not go to the supermarket then?"
"Because they are sold out"
"Sir, when I am out of stock, my chickens are also $1 each".