If the streets of heaven is paved in gold (not that it is but lets say it is) it would be worth as much as tar. Or it simply is so abundant that it does not have any worth. In heaven there is no money system so things dont have a dollar worth. I think that on earth the value of life is different than the value of life in the spiritual realm. Here life has a value because our lives are spent in a certain way. Spend it wisely and its considered to be worth something, spend it unwisely and it is not considered to be worth something, but the worth is somehow always in the eye of the beholder and what they can 'get' from your life's 'spending'. In the spiritual realm life isnt spent. There is no getting old, no end to it. So how does god measure the value of life? I think from gods perspective we are always alive we just change location. Today on earth, tomorrow we die and we are in the spiritual world, to Him i think its just a matter of logistics really. So whether we live or die does not make us more or less valuable. So if god wipes out an entire tribe we might think he doesnt value life, but to him its just a change in the location of the spirits in those bodies.
I have a suspicion it was satan who put a value on a spirit force which is why Jesus had to randsom us. But does god see his son as more valuable than an ant or us? I think he does, and so i think he values life also in varying degrees, but i would think that the measure he uses to determine value is rather more complicated. I would say that if you can speak things into existance you dont sort of value what you speak into existance, cause its too easy to do and the point of speaking things into existance is not for value, but probably for a certain purpose. So god values life in a completely different way than we do. What god must value though, is love, because he is love. I think the value of life doesnt cross gods mind, i think the value of love does. And that is why david asked god to spare him from his enemies, because a dead man he said, cannot praise god. While he was alive he could show god love. So life is worth nothing without love demonstrated through that life. So its not the life that has value but the love of that life. Its not the bottle of wine that is valuable, its the wine inside thats valuable.