Never heard of it, but I'm not surprised to see Asiatic knock-offs of the hugely successful Honda & Yamaha "i" (inverter) gensets. AT half the price of an eu30001 Honda, it's hard to pass up, even if it may not be quite up to Honda engineering standards.
I note the noise level is 58 dB at 21 meters (23 feet), which is definitely not real quiet. I don't know what is typical for a 3 kw, but you might compare that with other brands of 3 kw gensets. The Honda eu3000i is also rated at 58dB, but I'm not sure what distance it is measured.
It apparently has no warranty, so it would be a gamble (but then I've been known to risk a few hundred at Don Laughlin's Riverside).
A big question mark: how do they generate 600 watts more than the Yamaha, with the same noise level, but with a smaller engine? 40% higher efficiency? No way. At least one of their claims must be fudged. I'm going to ask around some more.
2.7kW continuous and only 3kW max? Where's the headroom? $100 shipping and insurance sounds quite high, and the $30 handling charge if you pick it up - where did that come from? Ever buy something at a store and have to pay a handling charge? The 'no refund/no return for any reason' statement would keep me from buying anything, anywhere, anytime - maybe on something used with an understanding of its' condition, but on a new item?
My recommendation: Forget this one. Unknown brand, seller with poor feedback, No returns, all equal to setup to get RIPPED OFF. Once again forget this one and continue your search from a reputable seller.