Yeah this is all attributable to the relative size/shipping distances involved in the UK vs. the US. 1-day shipping in the U.S. outside of major metro areas is

Yeah this is all attributable to the relative size/shipping distances involved in the UK vs. the US. 1-day shipping in the U.S. outside of major metro areas is basically impossible at that $100 price point (or whatever Prime is these days). 2 days is pretty remarkable when you really think about it.