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Released in early 2017, the JGAurora A7 belongs to the JGAurora family of “premium-class”, large format, high precision 3D printers, designed primarily for commercial or industrial use. The A7 is the only 3D printer in the high-end range that is advertised for sale outside of China.
These printers are not budget printers manufactured with cost cutting in mind (like the A5 and A3S), but are expensive printers, using high-quality components, that appear well designed to deliver premium results. However the high-end JGAurora printers are rarely seen, and their actual performance is unknown.
Amazon is strongly recommended - they have the best customer service, the most careful delivery service and the best return policy. However, the cheapest store is typically GearBest or Banggood, and by paying with PayPal you still have some recourse if things go wrong.