redmi note... should i buy from scalper or wait for black colour?... will price difference be much?

thanks to this xiaomi note deal... i'm finally upgrading my phone after so many years... last phone was digi promo HTC Incredible S where i lined up in front digi store early in morning...

don't think they sell the powerbank at a loss, more like break even price, the lower price achieved by larger volume, by selling online on their official website they know they can sell alot more than other brands.