Buy from official stores on alibaba or aliexpress and you won't have any problem, igame colorful and Maxsun are the best chinese brand money can buy, make sure you don't buy from people but from official stores only, many don't just know how to shop on these websites that's why they got scammed, you get discount this way, faster delivery and ease of mind
I heard so many good reviews about this Maxsun brand GPUs, it seems they are very knew in the market and still finding good customers and consumers, I'm guessing that's why they have discount price on their website, I will try and look into this brand later