These units are all the same, and I call b******t on him sending it to China and then sending it out, they ALL come from China. Although possible, I'm not aware of anyone outside China producing these.
Ok, the good news first, they are really quite good, not great, or extremely accurate, but more than good enough for most purposes. It will be powerful enough for you to do some serious aluminium work. Mine has a 0.8Kw spindle, and I've machined up to 38mm thick aluminium.
The bad, apart from the price seeming higher than I recall almost of them are, the controller that comes with it is garbage. Complete and utter. They all suffer the same crappy design flaws, and earthing problems, assuming your's hasn't had all the earth lugs cut off that is. I can't express just how rubbish they are. I spent weeks trying to get mine working, and scrapped it.
I know you've spent a large amount of money, but if you have any form of serious troubles getting the controller working, I would strongly advise you to immediately lodge a paypal complaint, and try to get a partial refund on the controller, and put that towards a Gecko G540.
These forums are FULL of posts about these controllers, a G540 is the best investment you'll make for your machine and your sanity. If you have problems with it, you could spend months trying to resolve, and in almost all cases, people with the same controller ended up buying a G540, or a Linistepper, or similar.