excerpted from from the NY post website -Art experts were surprised at the fierce bidding for the high-profile photographs, which went on the block to help pay back cheated investors in Refco, who are owed $16.8 billion.- -Before Refco collapsed Refco hung its 500-piece collection on office walls in New York and Chicago.- So far, the photos have garnered $7.3 million, double what was expected. All 500 pieces, amassed during the '90s, cost the firm about $3.5 million.-