I am trying to compare these two pumps. same manafacturer, same price, Close to same out put. Both are saltwater applicable. Whya the difference in handling charges and what am I missing as to the difference? Thanks in advance.
http://www.marinedepot.com/md_viewItem.asp?idproduct=MM1380&idCartRow=4462501&isKit=0
http://www.marinedepot.com/md_viewItem.asp?idproduct=MM2350&idCartRow=4462505&isKit=0
http://www.marinedepot.com/md_viewItem.asp?idproduct=MM1380&idCartRow=4462501&isKit=0
http://www.marinedepot.com/md_viewItem.asp?idproduct=MM2350&idCartRow=4462505&isKit=0