Apart from the service angle in regard to the retailer you need to consider after service, or rather lack of it.
As with most things that look to good to be true there's invariably a catch/risk.
In these instances it tend to be that electronic/camera manufacturers and distributor price the item according to the market it's to be offered, in order to maintain that market/region separation they also segregate the warranties by market.
So, as with most grey imports you're buying from one market and (unofficially) importing into another. The Asian market warranty will not be valid in Europe. You're effectively buying sight unseen. That's the risk.
'The easiest way for your children to learn about money is for you not to have any'. - Katharine Whitehorn