The 3DR deal keeps getting better - this was 399 a couple of weeks back.
Comes with drone, controller, gopro gimbal, extra battery, extra propellers.
True, 3DR has restructured and seems to be abandoning the consumer market - but it's still a great piece of technology for a really low price.
I was also able to use price protection when BB lowered the price.
I have been building quadcopters / drones for years and I am very happy with my Solo.