$2.50 to assemble and test?
At least based off the wage from 2012, allowing for an over 10% increase.
"At that salary, the wage ranges between $1.50 and $2.20 an hour, based on the exchange rate of 6.3 renminbi to the dollar." http://economix.blogs.nytimes.com/2012/02/24/the-ieconomy-ho...