WOAHH lets get real here it will sell well in the UK but where in the US it wont sell as well and in canada very few people know about Rita Ora she not very much present in the charts beside the UK Charts..
She's not going to sell 500,000 first week. Even Drake didn't manage much more than that, and look how popular he is!! If she's talking about singles, then she probably won't either. Even Part of Me and We Found Love's first week sales were nowhere near that.
She's massive in the UK though. It looks like R.I.P. is getting over 100,000 first week, and Hot Right Now also did that.