If you ran your own business would you be prepared to give half your profit to a third world country on the basis that what you sold would only make you half the profit?
The idea is simple, so why are we not doing it more?
The upside is that many more people would be inclined to buy your product on the basis of helping a third world country and still recieve something for themselves. That is as simple as, you buy a bag of apples and half of what you pay for it goes to a needy cause while the other half goes to the seller. You the customer get the apples and the knowledge that you have helped a cause. The seller has the reward of supporting a needy cause and in the process gets more caring customers.
The idea is simple, so why are we not doing it more?