Selling used spiral staircase and dry wall lift

Not sure where to post/sell a spiral staircase and a dry wall lift. Anyone have any ideas? I have attached photos of the spiral staircase. It is a beautiful spiral staircase. It is steel construction (painted grey) with oak treads.
300 degree rotation
At present it is in storage disassembled.
The dimensions are as follows:
The treads are 28″ wide which makes the diameter 56″ or 4.6′
The height is 12′