If you're in Australia, don't bother pricing one. Europe and the UK is where the action is for as long as the company survives.
Ownership and running costs have been a bit of a smorgasbord of offerings but seems to be settling on a model of users paying for the gas consumed (about 9MJ/hr, 18 - 27 cents/hr), a maintenance contract, lease or ownership by an intermediary with any FiT going to the lessor or owner. Natural gas is what they've been built for though the company talks of modifying the stack for other fuels.
CFU Price at posting:
1.3¢ Sentiment: None Disclosure: Held