Declaring in Pandabuy
Declared value is the cost of a shipped item as stated by its shipper. Customers do not need to pay for it. Declared value is an option when calculating freight charges. Customs use this value to clear your shipment and determine taxes and duties.
The money that you have to declare depends on the shipping company so you have to look in Google and calculate the declaring.
If you declare good the parcel you have lower chances to get your parcel seized.