Tempted to just buy a golfcart motor and some nesting buckets to build the thing myself. It's not a terribly complex device.
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Wahing machines for dishes are much more complex and have many more points of failure.
I was lucky and someone was interested in the old one to try to fix it, or to swap parts and make their current one look nicer, so I didn't have to haul the other one away to the dump, but that's something the installer will typically do.