K.T.
Try www.dallas.craigslist.com. You can go to for sale and then put in baby crib. This is a place where other people in Dallas are selling stuff for great prices and you just go pick it up.
Here are a few that I found already for you.
http://dallas.craigslist.org/bab/352744760.html
http://dallas.craigslist.org/bab/352746075.html
http://dallas.craigslist.org/bab/352375383.html
http://dallas.craigslist.org/bab/351850088.html