Is the "within 15 days" claim literally what it says? Meaning I can return on the 15th day or does "within" imply that it must be returned no later than the 14th day? Reason being is because I plan to buy an SP3 today to replace my Surface RT and I'll be away for 14 days starting tomorrow morning. So being that I would buy it today, a day before I leave it would be Aug 14th --- the 15th day before I can return it. Hopefully I won't want to return it, but just incase I decide it's not for me --- I won't have any issues returning it.