I have to agree with @PoorMansRolex - wearing a watch in the water isn't something that interests me. The first thing I'd do after coming out is take it off and dry it, that wet metal against skin doesn't do it for me.
On the odd occasion it might be a possibility I'd wear one of my Vostoks anyway.
For any watches imported (no matter what the price) you're liable to pay 20% VAT on the cost of the item and the cost of postage. You'll probably have to pay an admin fee to the courier too, usually £20-30. There's no extra duty to pay.
Brew won't charge you this at purchase. Each courier handles this in a different way.
You might be invoiced before delivery and they'll hold the goods until payment; they invoice upfront but still deliver and you pay whenever; they deliver and the invoice comes afterwards; it's delivered and no invoice arrives. In the last instance give it about 3 weeks until you start to celebrate getting away with it.
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