I'm going to New York soon. With the increase in the value of the pound, and the cheaper cost of electronics in the US, should I snag the latest HP spectre while I'm there? The keyboard and warranty might be an issue, and while it has USB C charging, I heard it only works with a proprietary charger. What's the tax rate there? I assumed 20% which still works out at £920, which is unheard of in the UK.