Flat Rate Pricing simple put....allows a worker to get paid for what he produces rather than the time if took him to produce it.
In my opinion flat rate/piecemeal/bid pricing is the most honest, fair, moral, and intelligent way to pay for services. Paying by the hour ignores hard-work, efficiency, skill, planning, and diligence and rewards waste. Men that work by the hour are slaves. They sell their time, their life, rather than their work.
Many think paying piece work, is dishonest, unfair, and a poor way to pay, and for sure piece work ignores, skill, and rewards production even at the cost of quality, many a union has won favor in industries that used piece work to push the worker to ever decreasing levels of pay, so it may depend on who you are trying to sell piece work to.