I have ordered a number of articles from Banngood China. Most were OK, cosidering the low price. Just normal China quality. When I had a problem it was usually dealt with adequately by their customer service.
But now this is not the case: I bought a quadrocopter, waited for 6 weeks because it was "out of stock". When I got it, I could use it for about 8 minutes, then one of the motors blocked, seems to have had a meltdown. I contacted customer service immedieately, with pictures an videos, but they refuse to give me the refund or replacement they describe as "3-day-warranty" on their website. I have to try and get my refund through Paupal conflict now.
In addition, it has turned out that another function of the copter, the gimbal that carries the camera, is also not working as described in the product description. They have no solution for this at all, just give me stupid words.
So, overall: Beware of this shop. The experience can be a nightmare.