That's what I thought, So I purchased the Radio receiver with Navigation from a 2016, and the AC controller with the split button off/ auto,
couldn't find a good deal on the 8.4 Screen with the Bezel, so I purchased just the screen until I find a decent bezel.
I too saw the backup camera from them on their website for $99 and it looked like a good option.
New 2022 maps are $99 for the unit I think I might bite the bullet, unless there's a better way of loading fresh maps.