The bubble hash machine is simply a table top washing machine. They sell them online at a fraction of the price.
Personally, I use a 5gal bucket and adgitate with a wooden spoon. Then I pour the mash into a separate bucket that has the bubble bags inside plus a drain catch system (valve, tube, and reservoir). I open the valve to drain the bucket with bags down and can run the water twice because I am draining into another bucket as a reservoir. System works well. Just have to keep it clean. Especially the filter bags. I wash and hang until dry after every use.