price = rs 800 + shipping for 4 pieces ( 2 cw , 2 ccw)
my friend paid it for more than rs 1000 ,
they are very strong ,balanced already and very good quality
specially made for mx 400 quad copter ,
no vibration and need to balance it
comes with pre drilled 4 mm shaft holes
link
http://www.rc711.com/shop/propeller-clockwise-for-mx400-p-5994.html http://www.rc711.com/shop/propeller-clockwise-for-mx400-p-5994.html 
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