buying protinex need info for max discount

As a protein source Proteinex is a poor choice especially considering it's horrible pricing. Whole soybeans deliver more protein per gram, Soy chunks even more at a fraction of the price. One's better off consuming more lentils. For special cases Whey or plant protein powder is a better choice.

What is the purpose?

Proteinex is fooling gullible customers with their name. 

Either consume protein rich whole foods or invest a bit more and buy whey or casein if looking for post workout supplementation

Protinex not good it's full of sugar better buy ensure

Avoid protinex instead buy Raw Whey Protein of a good brand.