It's rare, man. You can't get them for retail prices these days. You can still find them relatively easily these days, but you're looking at at least $1,000 USD (on the low end) to get one; I've seen them go for more. I have a feeling that they're gonna get harder and harder to find soon.
In this old video, tiao8282 has it listed as the 10th rarest AC item. Mind you, that is an old video. By now, I'm sure tiao may consider updating his list. I'm not sure if he would update it though. Also mind the fact that it is merely one collector's opinion of what is rare. I'm sure other people would dispute what the rarest items are. Nevertheless, the fact that it's on that list should tell you that it's certainly a rare piece.