I have an autographed piece of the Summit floor signed by the Hakeem Olajuwon, Clyde Drexler, Kenny Smith, Robert Horry and Sam Cassell. It is a limited edition and one of only 500 pieces that were signed by the Starters of the 1995 championship team. It and has a Certificate of Authenticity and is numbered 316. I plan to auction it on Ebay in the next few weeks.
Not sure how much it's worth. It was produced and marketed by Tri-Star Productions. I shot them an email asking if they could give me an idea of what to ask. I've seen pieces of the Summit floor priced all over the map. The ones that seem to be worth the most are signed by either Olajuwon and/or Drexler.
