I've been very satisfied with my purchased. I've mostly bought things like phone chargers, kitchen stuff like canisters, storage boxes, slippers, etc. and have been very happy with the quality given the very cheap prices. It does take 3-4 weeks to deliver. I also always look at ratings and reviews to make sure other users have liked the item.
If the item doesn't arrive on time (has happened on some occasions) or is not up to the quality, Wish customer support has always refunded the money