The risks of buying from AliExpress are about the same as purchasing from any online retailer. First, your item could get lost in shipping and never make it to you. Next, the item might arrive but be of lower quality than you expected. Finally, it is possible that you could get scammed. The seller might take your money but never ship anything at all. However, this is unlikely and you would still be protected by AliExpress Buyer Protection as long as you purchased the item directly through the marketplace.