Flash sale, whatever that means. Never again? EVER? https://www.gearbest.com/novelty-toys/pp_009244385861.html
Looks like a uArm style arm.
Pretty sure the four 9G servos are not included, but the hardware (screws & such) is. BYO controller.
I still like Hobby King's HXT900 servo, although metal gear servos might be best for at least the two shoulder joints (heavy loads).
Ken, I still say Parallax ought to sell an arm kit like this. Sure would look great on top of an AB or S3!