Robot Handbook: Robot Manipulators as cybernetics

Looking at the section for cyborgs and entries talking about creating cybernetic limbs with the formula for manipulators as a base cost.

The formula for creating a cybernetic limb seems to be wrong, making the limb much cheaper than it would be. Then looking at the "Quick Arm" it's cost seems to be very low if I was following the fomulas previously mentioned it would be over Cr700,000 compared to the listed Cr250,000.

Is there just a mistake in the PDF? It seems unclear how to manage the systems in the Robot Handbook, and some of my players are looking at using these sytems to purchase cybernetics and robots.