I'm not sure exactly what the other reviewers are talking about but I've had several positive experiences. Only use this site if you're willing to wait a long time for the items. This is not ebay and even slower than aliexpress but the prices are decent and there are a few manufacturers that are not features on any other direct from china type site.
My first package arrived damaged and after messaging them and sending picture I received a full refund and did not have to send the product back.
The second purchase the post office lost it in Canada (where I live) and after I messaged Yoycart they helped me by telling me how to contact Canada post and deal with them. The package was found and everything was in good shape, all pieces were in better condition than anticipated.
I plan to buy with them again soon.