RC keep that pump -a real bargin and runs cheap IMO. It should last 20-30 yrs if you 'rebuild' the vanes a few times. It operates at close to 4-5 hrs per kilowatt of electricity. Check your power company rates for each KW of electricity and it will give you a good idea of power cost.
20-30 years is a stretch for a small motor. Leeson Electric (they make electric motors) put's the average lifespan of a motor <1HP at 12.9 years. Could last longer tho, but depends on a few variables.
Never buy a used electric motor
