Thats a good point. I was quoted 5Gs for an OEM retrofit CIC nav with my car not having idrive. A little steep IMO. I think if I will go that route, I will just trade in my car for a LCI 328 with Nav although I looked at the LCI 328s even the ones with sport package, my 2006 330 still looks more aggressive to me. It even looks a bit bigger.
2006 330I ZSP 6MT, Pirelli P Zeros, Bimmian illuminated shifter, Aluminum trim, Logic 7, Mods to come