Brian Lam at TheWireCutter.com, having done substantial research, suggests that this Phillips bulb may be the best currently available, and calculates a yearly cost of $1 to $2.50 per year, as opposed to $5/year for a conventional bulb. Of course, economies of scale and competition will bring prices down, but break-even on each bulb is probably no more than five years out – unless electricity prices spike. As we try to game out the post-Fukishima electricity supply, each market segment, or “wedge,” (think of a pie chart) will count. This is a problem which will be solved by massing a large number of small improvements.