Purchased from SumpDirect great price great product! Great Company helped me pick out the right size Ion Package for my small sump pit. Company was great at taking the extra time to help me out and answer all my questions they were extremely professional best part about these pumps is the fact is the switch is NOT mechanical taking one of the top reasons for flooded basement out of the picture and with the inverter will put out the same gpm as it would under normal operation. The cost is well worth it in my book consider this 1. You would have to buy a decent sump with a battery back up that never gets used until needed 2.The back up pump would run off a regular battery with no inverter and wont even probably keep up with the volume if you live in a high water table like me 3. Easy to install! I don't normally write reviews but this company treated me right so I am doing the same! Thanks again!!