How much do patents really cost?
A couple of interesting articles:
https://ipcloseup.com/2017/03/20/patent-transactions-are-flat-u-s-asking-prices-firm-at-250k-per/
https://www.theverge.com/2019/1/17/18187026/google-fossil-group-smartwatch-sale-40-million-wear-os-android



https://ledder.io/en/rad/patents