Recped, there is no such thing as Expedited Parcel in "Personal" section. Regular Parcel and Expedited Parcel are two different services which happen to have same price (the reason is beyond me).
When someone says "discount 25% of Expedited Parcel" that means the discount on what it's usually sold for.
Btw. I did not mean to whine, just wanted my tool to be accurate. Don't care if PayPal is doing a deceptive advertising, really. I appreciate the discount being 21 or 25%, it's saving us a bunch.