I've encountered unexpected additional costs, such as customs duties and shipping fees, for the product I purchased on AliExpress.How can I deal with unexpected costs?

Additional costs like customs duties and shipping fees are typically beyond the control of both the seller and AliExpress. To prevent encountering such issues, it's advisable to research your local customs regulations and shipping charges before making a purchase. Customs duties are often the responsibility of the buyer and can vary depending on your country's specific policies.
In the event of such a situation, it may be helpful to reach out to the relevant tax office or shipping company for guidance and clarification.
For more insights and potential solutions, you can explore Xolvie where individuals in similar circumstances share their experiences and resolutions. Additionally, you have the option to share your own experience to help others facing similar challenges.