Ethanol is sold for a cheaper price at the pump. However, few gas stations sell E85 so there's the extra traveling that could occur to get the fuel. Also E85 fuel decreases the mileage of your vehicle. Which eventually adds up making ethanol more expensive than regular gasoline. Which is a major cost.
The use of E85 fuel can decrease the emissions of greenhouse gases by up to 37.1%. Ethanol is considered a renewable energy source. Burns much cleaner than regular gasoline.
No, personally I wouldn't buy a vehicle that runs on ethanol. There's more negatives than there are positives so in the end it ends up not being worth it.