Difference between Sony W950 and W850 series

I have been seriously considering Sony W850 / 950 series. But why are these two TV's are priced at different points? 55 inch 950's MRP is 2.24L, ... I demoed it myself.It has a IPS panel and no local dimming. The W800/802 /W850 upto 55" doesn't have any l

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