Often the drives are sold at different prices in different regions. For instance, I have a few WD Reds (NAS 24/7 grade) cheaper than Blues (consumer grade). The

Often the drives are sold at different prices in different regions. For instance, I have a few WD Reds (NAS 24/7 grade) cheaper than Blues (consumer grade). They have the words "Not for sale outside Mainland China" in big bold writing on the label. They are usually parallel or grey market goods, in my case they were brought into Hong Kong by parallel traders who probably brought infant formula or medicine back into mainland China