shop around. i dinged the edge of the rear wheel on my blackbird (motorcycle) hard enough to loose air. found a local shop that fixed it for $75. couldn't tell anything was ever bent when they finished.
i once used a hammer to straighten a steel wheel on a camry after my ex-wife curbed it. it held air and became the spare tire. wouldn't try that with anything other than steel though.
while not in your area, you might try uploading a photo to this shop (not the one i used) and get an estimate.
http://www.wheelrepairsanjose.net/