In loving, living memory, John Melançon 1928 – 2007
12 vote plug muscle power... volt even.
http://www.econvergence.net/electroacc.htm
$800 for everything.
http://michaelbluejay.com/electricity/cost.html
Average household uses 10,000 kwh electricity a year
The average cost per kWh of electricity is about 10 cents.
So, .01 cents per Watt-hour.
That's $0.1 per kWh
or $0.0001 per Watt-hour.
So $800 / $.0001 per watt-hour = the need to generate 8,000,000 watt-hours to pay this off.
At low-normal rates of 100 watts, that's a mere 80,000 hours. I'm in decent shape so let's cut that to 40,000 hours. At one hour a day, that's 40,000 days, or more than 109 years.
Note that if you can have a bunch of people using this for most of the day you can cut the payback time to ten years or less.
I would think that the bicycle to power conversion could be made more efficient, and that the whole hookup could be made a lot cheaper, if we start to design our living areas around multiple sources of power. The power generator itself is less than $100 I think. And the cost of electricity will rise a little bit toward its true cost, although wind power is amazingly efficient without the major subsidies of wars, local pollution, and global warming.