People having followed the Power Jack inverter thread http://www.anotherpower.com/board/index.php?topic=902
will be familiar with mention of Cher who's so very helpful working for Power Jack.
A friend of hers is responsible for Solinba inverters and these are available from https://www.amazon.co.uk/Solinba-1500w-Inverter-Converter-AC220v/dp/B01EI1KUVU/ref=sr_1_1?m=A1OVFNQQGD7NZY&s=merchant-items&ie=UTF8&qid=1468898168&sr=1-1
She had a return and got it sent to me to look over it. Not only could I not see anything wrong with it but on test it performed as I'd expect. It was happy with a 1kW electric fan heater and powered 2kW for 3 seconds, so demonstrates a capacity to handle a surge as specified.
The unit didn't like a 450W freezer - but no 1500W high frequency inverter does.
The standby current draw was about .6 amp so the 15W standby power draw is of the right order.
Frequency: 50Hz ± 5Hz
Output Wave Form: Real Pure Sine Wave
Efficiency: ≧90%; THD: <2%; standby power: <15w
Temperature Protection: >70°C
Input Low Volt Alarm: 21±0.5v
Input High Volt Protection: >30v
Output Short Circuit Protection: keep beep and red light on
Cooling Method: Air-cooled
Certainly for computers, TVs, audio and LED lighting circuits this unit has possibilities. There might be merit in supplying lighting and sensitive electronics from such a unit independently from a heavy inverter handling loads with motors requiring grunt such as washing machines and fridges.