A user on Hackaday has torn apart a SpaceMouse to find out how it works, discovering a relatively simple set of components that allow it six degrees of freedom.
Despite being pleased with the results of his dismantle, the original poster laments the price of such gadgets, which can range from 180to400.
However, other users comment that the price is reasonable when considered in the context of the R&D and production costs, especially as the product is niche and likely to have small production runs.
The gadget is beloved by many engineers and artists for its stability and the precision of its motion tracking.
There are also suggestions in the comments of the thread for cheaper DIY alternatives to the SpaceMouse, for those who want to try their hand at creating a similar device.