Price is the biggest improvement.
As is the case for most computer hardware, the cost of standard monochrome printers has fallen like lead weights. NDPS continues to improve and gain support. If you're a Novell NetWare shop, consider NDPS a requirement, not an option. With NDPS, end workstations can send directly to the printer, instead of through a queue on the NetWare server, thereby minimizing network traffic. Bidirectional communication allows printers equipped with NDPS to tell the user when the printer is out of paper or jammed.