Cheap good cellphone on ebay?

My cell phone looks like its going to break any day now, and I don't have a contract that can be renewed on At&t for another 2 years because I let my mom use it. I don't mind that at all, but I need a new one now. I looked on ebay and I like phones with full keyboards that are relatively simple, like the samsung propel, samsung strive, and the pantech link. What are some other good phones on ebay that range from 30-70 dollars? I don't have money for anything more than maybe 70. I can't seem to find any more decent ones.