First of all, the issue of customs clearance and tax payment is determined based on the value of your goods. According to relevant national regulations, the import of products with a value of more than 800R requires customs clearance and tax payment.

Based on your description, analyze the following possibilities for you to pay taxes:

1. First of all, you said that the value of the watch purchased from a third party on Amazon in the United States must not be less than 800R, and It is an imported product, even if the foreign seller writes it is less than 800, if it is found by the customs, it still needs to clear customs and pay taxes.

2. Foreign sellers are generally more honest. The amount they sell will be shown on the invoice declared by DHL, so customs clearance and tax must be paid.

3. DHL generally provides free customs clearance. If it informs you that the goods need to be declared and gives you an import customs clearance notice, you will definitely need to pay taxes.