Hello, i have done more than 50 transactions within 2 years. In general, you have to be causious because every seller is not like the other. Fortunately, the rules of Aliexpress is strict you can stop your payment if you don't receive goods within the written period or if you receive faulty things. I usually read the people's feedbacks in the same page of product. Sometimes they attach the photo of the received item weard and clear. I really find people's (rating + number of orders) so helpful to make a decision. Be aware that so many companies copy the picture but not the sane. The items displayed in the item's page can be different from discribed. I find some stuff more expensive than in my country and some cheaper. I try to order cheap things so if i get not satisfied, i don't lose much money. I can say out of 50 products, 3 were cancelled for stock limits, 2 were partially refunded to of faultiness (broken items), 2 had problems during shippment and were returned attomatically to china for unknown reason, with the remaining orders being fairly good or fair. The most problem is that some items arrive after 2 months (talking about middle east) so you can't be in a hurry.
Wish you get benifits from my review. Good luck!!