Longline, Todarodes pacificus, trolling, etc.... Rotary side roller

This is a side roller used for longline fishing.
Compared to a three-way roller, even heavy loads can be lifted surprisingly easily.
It is slightly smaller than those used for tuna.
A new one would easily cost over 200,000 yen today. It has been used at sea, so there is some rust and dirt, but it is still perfectly usable.
The rotation is good. It's a custom-made item, so I don't want to sell it cheaply, but I am open to price negotiations.