Pricing is to set a price for a commodity/service that people are willing to pay for.
It has nothing to do with the cost of production or the affordability. The selling price is not necessarily higher than the cost price as no profit is guaranteed in free trade. Sometimes the price may be affordable but people are not willing to buy. Sometimes the price may not be affordable, yet people are willing to buy with whatever means. The price depends on the quality of the product and the marketing. Good marketing can sell an inferior product at a price people cannot afford to pay.
Pricing can be a science or an art. The science of pricing is to yield the maximum profit. The art of pricing is to bring the maximum benefit to the world.
Take, for example, my Feng Shui Correspondence Course into consideration. If I price it at $20 including the course books and the yahoo group and wiki group, the I suppose I can sell about 3000 to 5000 a year with good marketing. The profit will be maximized. Scientifically this is the right price. This will allow many more people to understand Feng Shui and to do it themselves. The impact is that no one will care to be a practitioner as there will be no business. This means no one will have enough practical experience and Feng Shui will stop at the theoretical level. There will not be any new findings. Such pricing cannot be considered good pricing as it has a negative effect ultimately.