My past experience buying from the MS store has been that their CS is very helpful with price adjustments . A year or so ago I bought a fancy monitor from them , that I swear had to have been mistakenly put up for the USD amount instead of CDN . Then for about half a day it went on a further $ 150 off , because Cyber Monday started . So I called them and explained that I ' d bought it ~ 40 minutes before the $ 150 off sale started , and they issued me a refund without any fuss . And if I remember correctly they issued it in some weird way after the tax calculation so I got more than $ 150 back . So if I do see this thing going on an even bigger sale , I ' m probably calling them up again and asking nicely . But they have a 30 day refund policy too I guess if return rebuy is necessary .