When you order a task or work chair, the wheels (or casters) are almost always included. Sometimes, you get the option of different casters depending on whether you are using the chair on a hard surface or carpeting. So the makers of your $800 task chair would never consider adding on another, say $400 for wheels.

But, that is not the case with Apple computer’s new Mac Pro. When Apple first showed off its new Mac Pro, the company also revealed that you could configure it with optional wheels, which might be handy if you need to regularly move your workstation. At the time, Apple didn’t share how much the wheels would cost, but it did say that the base Mac Pro started at an eye-watering $5,999, so they didn’t seem likely to come cheap.

The Mac Pro is now available to order, and it turns out that you’ll need to drop a cool $400 to be able to roll your new computer from place to place. Broken down another way, that’s $100 per wheel. What a steal! With task seating you actually get 5 wheels for free. Maybe seating manufacturers need to consider selling wheels as options to increase profit margins. Just a thought.