Nintendo UK just dropped a brand new Joycon based info-graph with the tagline “more than meets the eye”. It highlights all the uses and technology packed into those tiny controllers. A lot of this tech is the primary reason a set of Joycons runs a cool $80, since most controllers do not bother with this kind of technology.
Of course, whether or not the controllers are ultimately worth that price will be up to you. Good news is, third party controllers always exist and are often much more affordable.
Source: Nintendo UK