Hardware for rolling ladder

Does anyone know where to buy hardware for a rolling ladder? Rockler only sells the complete ladder. At $ 1100.00+ I need to find a alternate solution. A ladder that leans has been suggested and I may go that way but I always wanted a rolling ladder. Thanks in advance.
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Why not try Putnam Rolling Ladder Co. in NY? They make them for Rockler and may be willing to sell just the hardware. I posted their web page yesterday. Ed
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