I had 2 test drives and both cars had it. IMHO it's really good. Funny thing, when I was reversing the car using the mirrors I didn't think I could make it into the place behind me without scratching other cars with my rear bumper. The dealer who was with the car with me could see the situation on the display and said "Trust the camera". So I did and it went fine.
I decided to go for the whole pack with front and rear sensors and the park assist system which is only £60 on top of that. Bargain!