What are the cost of goods on components/labor? It seems like it would be worthwhile to manufacture a small run, if you think you can make your contracting rate

What are the cost of goods on components/labor? It seems like it would be worthwhile to manufacture a small run, if you think you can make your contracting rate. There seems to be bit of a move towards proprietary hardware (Boxee, Smith & Tinker, FitBit) in the star tup world so bringing a physical/electronic product to market is a neat/valuable experience. Worst case you could just make it a "kit" and sell through AdaFruit or Sparkfun, in that case your cost will just be parts, a cardboard box and some miscellaneous packing materials.