I am not the person selling this but thought I would share the link in case somebody is in need.
http://minneapolis.craigslist.org/dak/pts/5365054117.html
Sorry. I think I was looking at the wrong part. Classic industries sells them by the pair for $179.99 part number is MM1898.
Jegs sells them individually. Left side part # 455-195-42L
Right side part # 455-195-42R
$79.99 each
Rock auto sells new replacements for about $40 each. I was just on their site this morning and noticed them. Might be easier than tracking down a used one.
I bought new one's last winter from somewhere else... can't rememner where and they fit well. I'm guessing these will be the same part...