Am I overlooking something !
XMS 4GB DDR3 1600Mhz is like 1600~1700 in the market and this is DDR3 1333Mhz.
I hope OP knows that Gskill Sniper 4GB x 2 1600Mhz DDR3 1.25V sold for around Rs 2800 from Prime ABGB. With lifetime local warranty.
This is w/o local warranty, used, slower (1333Mhz)...