I've been looking for a featherweight also. I'm trying to stay at about $300 and still haven't found one. I missed a beauty by about 2 hours off Craig's list. The lady selling was overwhelmed with offers. She sold it to the first person who called 20 minutes after she had posted it. She said she had at least 50 calls about it, most offering higher then she was asking for. She regretted selling it so fast.
I went to a quilt show on Saturday and they had a booth of featherweights. Prices were between $400 and $900. The more expensive ones had wonderful paint jobs and decorated cases.
I'll just keep looking.