Ok, I'll bite.
Please post a copy of your receipt in American Dollars reflecting a cost of about $625, aprox. half of this package. Keep in mind that this is comparing a two piston to four piston kit, one piece to two piece hat/rotor and 12.? to 13" diameter. Not that this kit is a bad purchase in any way, far from it, but half the cost? I beg to differ.
If so, perhaps I need to consider the pricing structure some more.