Truth is, the price is not unfair. Li-Ion batteries are running around $600/kWh these days. If the Focus matches the Leaf's 24kWh battery, then it is carrying about $14,000 in batteries. A nicely equipped Focus goes for around $23,000, which gets us to $37,000.
I suspect that Nissan is losing money on the Leaf, and calling it a marketing expense. At a price of $32,000, the Leaf only allows for a base vehicle price of $18,000.