Value is a benefit, economic gain, relationship between benefit and cost of something. Value is the logic people use to explain their decisions. It is the rationale that supports emotions and expected experience.
There should be some benefit for people to see why they need something and there is always some cost associated for it. It can be money, time, distance or any effort somebody has to give for change. The difference between benefit and cost is value. It can be expressed in price or those can be a non-material values rooted in beliefs, culture or personality.
Value can be associated also with existing trends and tendencies within some micro or macro society. What is value for one group of people is not necessarily something worthy for other group. This links value to payers and admirers.