This is a mannequin that can be used as an avatar or world asset for showing off outfits that comes with a mochifitter profile.
Slightly uncanny valley for some due to there being no head, but it's no more uncanny valley than any other mannequin, I think.
Current going price regular is 3000JPY, or about US$18.72 at time of post before applicable taxes.

Here is the sample avatar which can only be found in Avatar Museum 14, as of this moment:
https://vrchat.com/home/avatar/avtr_aa5908a0-ae4f-45f0-8791-f4fd56212399
The sample is incredibly basic but that's because it doesn't require anything. There's no clothing and no options, you just get a sample of the mannequin. I don't know if there's chest bones, but I'd assume none as the sample has no moving chest physics... but, it may still have chest bones regardless for mochifitter reasons, just without physbones.