Com'on, please don't repeat this tax theory 
Toyota/Honda also pay same tax, even new entrant with green field status will have 50% tax benefits.
So, if the price difference between Yaris and Alsvin in Saudia is like 8 lacs, then it is possible to have same prices like Lumiere and Ativ X difference should be 8 lacs, difference should be more as Changan has greenfield status but beside everything, the difference should be 8 lacs I believe.