A relation that indicates the price of a product that the seller quotes to a potential buyer. For example, to say that the list price of Cup001 is $40, (= (list-price Cup001) (* 40 US-Dollar)).
(=> (And (Currency-Transferred ?Buy ?Price) (Object-Sold ?Buy ?Prod))
(List-Price ?Prod ?Price))
(=> (And (List-Price ?Prod ?Price) (Object-Sold ?Buy ?Prod))
(Currency-Transferred ?Buy ?Price))
(=> (List-Price $X $Y) (Product $X))
(=> (List-Price $X $Y) (Currency-Quantity $Y))