[rdoherty]

One thing those tables don't account for is paying for your own (and other full-time) employee salaries post-production. Someone has to keep working after the initial production (and future) run is complete. You don't just sell your hardware, make your profit and leave :)

To sell 50k units or more you will need a few people to handle your store, marketing and support. Also will you continue to sell the same model for years or develop new versions? Lots of other costs to keep a business running should be included in your business financials.

A 3x multiplier is slightly low for CPGs, I'd go with 4-5x depending on the product and market to give yourself some breathing room. Things like sales, resellers and coupons all eat into profit.