This is a good post,answered most of my questions. Is it free though? It seems I can't find out the price without signing up. My first concern was how it will

This is a good post,answered most of my questions. Is it free though? It seems I can't find out the price without signing up. My first concern was how it will be abused by malware and blocked by different networks. For example ngrok.io is classified as "proxy avoidance" which means if I use it and go to a client site that blocks it,it will create an awkward situation. But I think requiring 3rd party idP might solve this issue with tailscale.