Has anyone had any experience with these? The prices for new ones on ebay seem hard to beat, less than half of what the competition is asking. The 6500 gph pump is like $115.00. What if anything is wrong with these pumps? I can't find any information on operating costs or dependability.
http://www.ebay.com/itm/BIG-Midland...822?pt=LH_DefaultDomain_0&hash=item2c5ebc54de
http://www.ebay.com/itm/BIG-Midland...822?pt=LH_DefaultDomain_0&hash=item2c5ebc54de