This screen shows the cost¹ of the currently selected tube, and how it is calculated. Note that the raw material costs are only one aspect of the final cost - some materials are easier to form into tubes than others, and the cost of joining the tubes together also varies considerably. Try selecting different materials from the Selector bar at the top of the page, and see how they affect the cost of the tube.

¹The cost of the frame is in an arbitrary currency and is intended to be used for comparative purposes only.