The famous hat with red flower sells for 3201 Euros in a sale raising 500,000 Euros to pay off debtors.
See the article here: http://www.cbc.ca/arts/artdesign/story/2009/05/27/marceau-mime-auction-results.html
I suppose it is in the same vein as the Prince of Pop's Neverland Contents sale - which did not end up going ahead, for reasons given here http://news.bbc.co.uk/2/hi/entertainment/7999315.stm
I recommend taking some time to look through the catalogues.
http://www.juliensauctions.com/auctions/2009/michael-jackson/catalog-list.html
It is an amazing collection of stuff.