Should I declare a low value to avoid import fees?
The value you enter on your shipping form is the value that will be declared at customs, so it is important that you declare accurately.
If you declare too low a value, it may be considered unreasonable and adjusted upward, which could be higher than the actual sale price. Also, because you are required to insure your package for the sale price, your insurance value should match your declared value.
Declaring your item accurately will help avoid unnecessary taxes.