A split, ergonomic keyboard layout is celebrated for those who want natural arm angles and less strain on their shoulders and wrists—and the Angry Miao HATSU Ergonomic Keyboard takes brings the design into its endgame. Fully separate, ergonomically contoured keyboard modules—one for each hand—allow you to space your left and your right hands exactly as far as you’d like for gaming or typing Read More
While I completely agree this price is absolutely insane, it's not Drop that chose the price - Angry Miao has sold this elsewhere with the same price tag. Drop obviously chose to run it on their site, though. At least it's only an extra $750 for the fancy paint job version.
I think it's the first "wireless" ergo in terms of both wireless connection (no cable between the split keyboards and the input device) and wireless charging. A low-frequency communication protocol is developed specially for this product to achieve low interference and low latency.
The surface is a 3D curved metal uni-body. We may see a lot of curved shape ergo in 3D-printing or plastic, but this is aluminium alloy. Only 5-axis CNC machining can do that but since the uni-body is not a regular shape, the craftmanship is still difficult and costly.
I think the product description in DROP is a bit too simplified, take a look of Angry Miao's website: https://www.angrymiao.com/am-hatsu/