Confluence Corporation, located in Champaign, Illinois, decided to begin buying rare earth metal from the Canadian Rare Earth Company, with headquarters in Montreal, Quebec Province. The following clause was included in a signed contract between the companies to purchase quantities of the metal Lanthanum for Confluence's production of rechargeable batteries: "During the Initial Term, Seller shall sell the Products to Buyer at the purchase prices set forth on Exhibit A. All prices are in dollars with no cents. Any adjustment to prices will require written modification signed by both parties within ten (10) business days." A few weeks after signing, the Confluence Corporation attorney calls the Canadian company with a concern about the clause. What do you believe this concern may be?