Yes, I have seen it, its American and as such will probably be 110 v.
Airflow and water lift are like flow and pressure - inversely proportional but as I said its the wattage that counts. I'd buy a decent machine that has got a proper importer and that you can buy spares for. Upkeeper used to push a petrol machine but that was bulky and never really took off - there was one on e bay recently for £2200. Look at the big brute website and their machine vids are more impressive but the machine is bulky. You can sensibly run 3000 watts on a 3 pins plug - anymore and you'll need a generator.
Maybe try the window section as its been tumbleweed on here recently