MIT Develops a Cooling Technology of the Future
I want to say one word to you. Just one word. Are you listening? "Plastics."
In terms of cooling, we presently use our massive (and impressive-looking) heatsinks made of heat-conductive metals all in hopes of drawing as much heat as possible away from our chips.
Researchers at MIT have made a notable breakthrough in transforming polyethylene, the most widely used polymer, into a material that conducts heat just as well as most metals while retaining its properties as an electrical insulator.
Another special property of this transformed polyethylene is that it conducts heat very efficiently in just one direction, which makes it highly suitable for cooling a computer chip.
While discoveries such as this are often in an infancy stage that makes it just dream material for computer enthusiasts, the added promise in this latest breakthrough is recognition and interest from Intel.
Ravi Prasher, an engineer at Intel, took notice of the work and characterized the researchers' work as "phenomenal," and added that "this is a very significant finding."

Its polyethylene, it cant be that expensive.
On the plus, it should be cheaper to produce than copper/aluminum based coolers.
Its polyethylene, it cant be that expensive.
polyethylene is a petroleum-based compound. it is also the base component in plastics. because there is already a huge industry dealing with this kind of material, you should expect it to be more expensive than a child's action figure but less than a common, high end, full copper heatsink you can find today (assuming it is made without any other expensive components like copper).
according to the source, the only difference in making this stuff over normal plastics is slowly lining up the polymers so they all face one direction. IMO this could be interesting because we could eventually get flexible heat pipes out of this.
I'd say let it get out of adolescence first. It won't do what you want it to during this period.
Also, referring to shadow187's comment:
Chances are, if it's polymer, it can be mass-produced very cost effectively.