I have heard horror stories about eBay and knock off inverters. So I contacted www.mppsolar.com and received an email from a tina@mppsolar. She gave a price of $870 I believe. I'm not sure if her Auto correct is off or if I'm reading it wrong but here is how it appeared to me. Uds 870/pc plus USD 250 dhl shipping from Taiwan 20 days. Have you ever done business with them directly? Can they be trusted, and is there anything to the eBay scams.