46% discount should provide enough incentive for Joe Bloggs to open an account on huobi or okcoin. Despite China has banned bitcoin 10 times, I can tell you that, based on my first hand experience, Chinese people could still deposit fiat to exchanges in less than 30 minutes.
In the latter part of 2013, Bitcoin skyrocketed arguably due to an increasing mudslide of Chinese capital that thought they had found a way of getting their wealth out the Chinese economy and turned into USD or whatever. The Chinese government put a stop to that....sure, they never banned Bitcoin outright, they just kind of disapproved of it and that was enough to send the majority of Chinese Bitcoiners packing.
As and when the range of Bitcoin accepting merchants increases, authorities in China and indeed authorities all across the world will surely take measures to prevent their economies and tax collecting capacity is not undermined.
Like I said, if these sort of Bitcoin purchases become a big enough issue, the authorities will move to close the loophole....
......but non-the-less, what you have stated regarding Bitcoin and Dell is very poignant and is the sort of thing that will make Bitcoin soar......Capital Flight and/or Avoidance of Capital Controls primarily from developing and especially from the emerging BRICS nations from national currencies into USD/Euro.
Bitcoin is a financial weapon....
Cui Bono? The powers behind the current Western economic and financial Hegemony!