Can you back out $12?? I would put the BOM closer to $6 if I'm going with the high estimate, and more than half of that cost will be driven by the ATMEL and OLED.
You're absolutely right, I was far too generous. For a sensible size of production run, your $6 figure is much closer to the mark. I made some faulty assumptions about the amortized cost of tooling for the plastics and over-estimated the cost of both the OLED module and the li-po.
In my (pointless and lousy) defence, I'd say that I'm used to making extremely conservative estimates, because nobody ever got fired for coming in early or under budget.
In my (pointless and lousy) defence, I'd say that I'm used to making extremely conservative estimates, because nobody ever got fired for coming in early or under budget.