I have a one-time purchasing experience there and also my first time. If I have a chance I won't buy there anymore. I placed an order (cell phone)and paid by my credit card but I changed my mind roughly 15 minutes later then I canceled my order. But I have to wait for seller approve my request. 1 day after, the seller had no response then I chat to Ali service member which always said they will deal with and nothing I should worry about. After that, I chatted with Ali service member for 5 days, nothing change, that was total waste my time. each Ali service member said they will write an official letter to the seller but didn't work which means Ali vendor control ability is so bad. the 2'nd thing is Ali service member always say the same you are the first priority for them but don't rely on them. If you really want to buy things there, don't make mistakes and only follow the process.