It is bordering on paranoia!
If you bought something from a Christmas market or in a charity shop here would you boil and sterilise it before travel? Or from any ebayer?
This is a bowl in its original pacy, available from a variety of ebayers, the one who I linked has nearly 10,000 feedback.
I'm going to purchase it and send via the slow post, that will still double the price of the item, but I can not stretch or justify paying anymore to get it before Christmas. Was worth a try though.