A retired person has asked me to sell some of his collector item motor bike parts on eBay.
I'm told that these parts are in demand in the USA.
Where do I find information about tax and custom charges for shipping these items to the USA?
One item is valued at $350, because it's supposed to be a collector's item.
I am doing this as a favor and don't want to be be presented a bill by the Portuguese customs or tax office after selling these items.
Thank you for any and all tips, tricks and advise!