The label said Discovery last week and Worcester this week, and the price did not move. That is not a mistake: we buy whatever is picked and good rather than the same variety all year.
A supermarket sells one apple for eleven months by storing it in a controlled atmosphere, which works and is why the texture is always the same and the flavour never is.
If you want the sharp ones for cooking, ask the driver or put a note on the order. There is usually a crate of something too ugly to sell whole, and that is what the juice is pressed from.