Congratulations on your new car.
Yes I think it's a bit mean that the reversing camera is only available in Tech Pack 1 (at least here in the UK).
So something I paid £300 for when I bought my X1 in 2018 I now have to pay £900.
Admittedly Tech Pack 1 does contain other things like adaptive headlights.
Having said all this I will probably end up shelling out when I replace my X1 in 2021
