In the Michio Kaku's book, Visions, he states that we are continuing to rush ahead. To prove that, he says “In the past decade more scientific knowledge has been created than in all of human history.” Since we are so advance, we don't need to be observers "of the dance of Nature". We have moved “from being passive observers of Nature to being active choreographers of Nature.” We are no longer discovering, now we are creating. Conserning future predictions Kaku says to listen to "those who create it".
Answer: No you can not put a price for happiness. It’s an emotion.
Explanation: happiness comes from joy and pure goodness. Sure money can buy some happiness. But it does not last forever. That is why true happiness does not have a price but is highly valued.