You got my attention with your Mighty Boosh moon pic. I'm a huge fan.
I've actually looked for mannequins online and if you Google it, you will find too many for me to list here. The prices vary on what kind you want, with/without heads, poses, male/female/child, etc.
I found mine on Craigslist, Ebay and have called stores that are closing or I see "Going out of Business" signs on, and just ask. You'd be surprised.
You also want to call thrift stores because a lot of times when stores go out of business and they can't sell the displays, they just have Salvation Army pick them up.
Lastly, Google "outlet retail store displays" in your area/zip code or go online.