On the contrary, because it is assembled by hand, there are less chances that you would have a bad quality unit, because he takes care in assembling it, and testing it. After placing order, he takes 2-3 weeks to prepare it completely. He won't send a unit that has been poorly assembled.I swear I would consider it, but there are two points that lead me to exclude him from the list.
The first is that they don't sell on AliExpress and the second is that production is by hand (nothing against it), but I'm afraid of having a QC problem (I had with Aria, Moondrop sent me a new unit) and it would be difficult to solve.
But that's a beautiful IEM!
However, the products that are manufactured in batches, will have more chances of having a bad quality.