In response to the request for a Duo-Art pipe organ player, the
best source that I've seen is the Church Organ Trader Message Board.
I've often seen ads for Duo-Art pipe organs and player consoles.
Right now there is listed a Concertola (a pipe organ player) at
best offer over $5000.  The source is
  http://www.keyboardtrader.com/msgboard.cfm

Good luck,
Eli - Eliyahu Shahar