Sierra Trading Post UK

when i saw sierra trading post it said sierra trading post uk and boot price given in pounds, u r then taken to the usa site where all is obviously in dollars.u then have to add shipping costs(no prob as it still works out cheaper than buyin over here,uk)BUT then i struggle to find cusoms charges for importing and the live help cannot help!seems to be working out at same price as here with 2 weeks less waiting time. misleading!!!