I purchased some other cables from BJC (actually their ‘Iconoclast’ line) via their site a year or two ago and the duty and VAT were added at checkout in that case. Delivery was straightforward and there was nothing further to pay. I have also, in the last several months, bought a watch from a shop in Japan that does internet sales. In that case Fedex delivered the item, but it was followed a few days later by an emailed invoice (from Fedex) for the VAT and a disbursement fee.
In their different ways both were fairly smooth purchases.