You forgot VAT.
Yep, he's done that for many posts. Also seems to forget US sales tax on the one he bought, unless he's had it shipped to Alaska, Delaware, Montana, New Hampshire, Oregon for collection in the USA he's gonna end up paying anywhere from around 4-11% more that £404.
RCP from Intel is $488-499, so £369-378 +VAT = £442-453 - presently only being gouged by £150+