J.X.
I'm not an expert, but I have bought and sold. Relist the item every day. Have a descent photo if not an exellent one. I'm amazed at the poor quality photos people use and I for one don't want to buy something I can't really see. People want to be sold on something, especially something of value. Tell a great story with it. Not something like, "this thing is collecting dust in the corner of my garage", but be interesting and honest. "bought this really amazing quality treadmill and now I need to make room for a growning family". Dont show that you think its junk, show that you think its valuable. At the end of the day, people shopping on Craigs list want a bargin. It needs to be priced right. If you don't get any nibbles keep lowering price and repost.