My girlfriend is looking for a replacement steel wheel for a 2012 Honda Fit, as one of hers is currently bent. I think they are 15" rims, but I was hoping to find the best option on where to purchase a replacement steel rim. Some local Firestone shop was about to charge her $180 for a new rim, and to move the tire onto the new rim. It was my impression that, that was ridiculously high.
That sounds about right for a new factory steel wheel. You could also try TireRack.com to see if they have any, or some local junkyards for used. Odds are you're going to have a hard time though, not a lot of junked Fits laying around to get wheels from. Or, you can use it as an excuse to upgrade to some nice new wheels. :-)
Slightly off-topic, did you considered repairing it?
Depending on how much deformation you have on the rim, you could restore it in a wheel shop. They could hammer it or use a special equipment for reshaping too. Costs in my area start at about 20% of new rims cost.