additional processing and customs charges on goldring 1006 or nagaoka mp150

Im considering purchasing the goldring 1006 or nagaoka mp150 on ebay.  Both indicate additional international processing and custom charges.  Does anyone know about  what this additional cost maybe?  Also any thoughts on both of these cartridges.  Looking to purchase for my pioneer plx1000.  My understanding is that the ortofon 2m blue is nice option as well but on my table could be a real pain to mount.

Appreciate your thoughts.