"fair price"

Bangladesh Building Collapse Kills More Than 500

I have learned this VOA's news yesterday by transcribing it. I always wonder if people in developed countries have bought things at "fair" price from people in developing countries when I hear this kind of news.

In capitalism, people want to get less costly things. But, there is "proper price" for things that is dealt in market, I think. It means that Westerners should buy things with good money that support people's life in developing countries.