Today only, YescomUSA via Rakuten offers its Yescom 1-HP Submersible Water Pump for $50.90. Coupon code "HOME20" drains that to $40.72. Plus, you'll bag $6 in Rakuten Super Points. With free shipping, and assuming you'll use the credit, that's the lowest price we could find by $17, outside of other Yescom storefronts. This 750-watt pump has a maximum output of 3,432 gallons per hour and a safe depth of up to 23 feet.

Note: YescomUSA via Rakuten offers its 1/2-HP model for $36.72 via the above coupon, also with free shipping and $5.40 in Rakuten Super Points. That's the lowest price we could find by $15.