ColorTech's Laser Division produces laser printers and the toner cartridges they require. Although sales of its laser printers have risen, the monthly revenue from these sales has not increased due to competitive pricing pressures that have forced ColorTech to lower its printer prices. Unfortunately, ColorTech has not been able to reduce the manufacturing costs of its printers. Therefore, despite the rise in printer sales, the Laser Division is likely contributing less to the company's overall profits than before.

Which of the following, if true, most seriously weakens the argument?