I have one of these new for $55. Specs are 30W, 4000 l/hr (about 1000 gallons/hr) and up to 3.2 m head (about 10 feet). If you're not familiar with these pumps they run on safe DC, their output is adjustable and they have a feed mode that allows you to shut the pump off for 10 minutes. I have one on my return and one on the skimmer (with a different impeller). They claim if the pump is dry it will also shut off although I have never tested that theory.
Dave
Dave