I would probably pass as well but $200 won't buy much in central Iowa. Most of our 70s and 80s gas pipe bikes with steel components get listed fr $150-250. I'm not saying there isn't good stuff out there but it is slim.
Here are a few other local sales...
http://ames.craigslist.org/bik/3190473514.html
http://ames.craigslist.org/bik/3231688506.html
http://ames.craigslist.org/bik/3226403635.html
I didn't hand pick these, they were the first three drop bar bikes I found in Ames.
I am local(ish), if you find a bike in the des Moines area i may be able to check it out and service it.