The main issue is collecting the 10% fee from the US buyer to cover the tariff. On eBay UK there's currently no easy way to do this, since they haven't implemented it yet at checkout.

I'd rather avoid adding 10% of the model's value to the P&P to cover it, due to it making the postage look extremely expensive.

We're hoping to hear some more updates from eBay UK in the coming weeks when it comes to tariff collection, but I've temporarily blocked USA for a little while.

Kernow Model Ships