I'm gearing up to get back into the vinyl game so I'm curious to know more about these cheap ultrasonic cleaners.
Most reports are, cheap ultrasonic cleaners work just as well as the expensive ones, or at least very close.
Most of the cheap ones use the same ultrasonic tank, a 6 liter tank found all over ebay for about $100.

Then there is some motor/record holder device that is used along with the tank shown above.
Something like the Vinyl Stack.

Or CleanerVinyl.
Either way, they are much better than vacuum record cleaners.