No group buy price known, they don't make one for us yet, but I hope to show them this thread to get them to make for us and give us a group buy.
They claim full factory integration.
Go to this page and keep scrolling, will be clear. I presume the head unit is a small android based computer that translates the bmw signals:
https://avinusa.com/bmw-5-series-102...on-system.html