This one wasnt too bad
http://fpgamining.com/ 400 megahash/s at 17.2 watts and it cost like $580.0 and my power per kilowatt hr is 13pence so it worked out at £20.16 to power it 24/7.
But after working it out it looked liek it might take time to break even at it roughly earning 0.5550 bitcoin a day!
SO anyone got a good fpga that didnt take long to break even!
Break even times for hardware are usually between 1-4 years. FPGAs take longer, GPUs still have a bit better Mh/$ ratio but require more power. You may wait for asics to come out. People are working on it: e.g. https://bitcointalksearch.org/topic/asicminer-entering-the-future-of-asic-mining-by-inventing-it-99497
The numbers are way of. Someone is preying on people's money...