I went to Marshalls yesterday and saw 100% ceramic plated flatirons starting at 19.99 and ending at 39.99. From experience, ceramic-plated (plated as in that the plates are plated.. haha) flatirons don't work, but I don't know exactly why. Mine makes my hair brittle, stringy, and tangled, not to mention catching my hair on each run-through. I used my best friend's 100% ceramic plated flatiron and it made my hair soft, shiny, straight and beautiful just as a flatiron should. Her's was a Conair. What I noticed is that the surface of 100% ceramic plates are that they are very shiny-- almost like a mirror, and you are able to leave a fingerprint on them or fog them up with your breath.
Hope this helps, and don't worry about looking strange testing each flatiron in the store breathing on them to see if it fogs up or seeing if a fingerprint shows -- I did it!
p.s. the one at Marshalls for 19.99 I'm thinking about getting comes with a mini travel flatiron too. Don't know about anyone else.. but I'm the find of person who would keep that in my purse. I think TJ Maxx also carries almost the same ones.