True, but even then, they have to pay UK taxes, someone in the UK to ship it to your door, a UK-based accounting firm for filing accounts, etc. Plus, they have

True, but even then, they have to pay UK taxes, someone in the UK to ship it to your door, a UK-based accounting firm for filing accounts, etc. Plus, they have UK warehouses for their UK shops, and those costs are spread across online and offline sales.