I can't comment on the quality of the product.
What do you want it for?
If you want a kW inverter then maybe 24V battery banks might be called for? If not 48V.
If you want hundreds of watts of solar panels, then more efficient power conversion might be worth having.
It seems quite good value and it's all nicely in one box.
Good price for a pure sine 1000W inverter. Nobody in their right mind uses PWM for a 600W solar system, so that part seems rather silly. The 20A for shorepower charging is also a bit weak, as with such a big inverter you'd be expected to have a big battery bank. Also note the rather specific voltage range for the solar panels: 17-25V.
So while it looks shiny and sounds like a good deal on an inverter, the rest of the numbers don't make a lot of sense. There is however a link to an MPPT version of the same thing, which is starting to make more sense - alas, those seem to cost much more.