Here are the 3 biggest problems with Alibaba:
Middlemen- Alibaba is great because it has hundreds of thousands of "manufacturers". Nonetheless, many of these individuals are not real manufacturers but are middlemen that masquerade, making up the price, promoting miscommunication between you and the actual manufacturer without providing substantial value.
Scammers: Middlemen will charge you higher fees, provide no real value, but scammers will take all the money. There are still many scammers in Alibaba despite the organization's deliberate, active effort to combat and remove dishonest suppliers from the system, so you need to be very cautious to be on the safe side.
Quality: When ordering from overseas, quality is another striking concern. It is very common to find products being advertised as premium or high quality. But on receiving them, you learn that the quality is unacceptable in your opinion.
Alibaba is amazing and can be of great help to you. But you need to minimize those problems by doing your work thoroughly and with care.