Do you necessarily want the brand CHI or do you just want a ceramic straightener?? My sister has the CHI and I have this one:
http://www.sallybeauty.com/shop/1650/510017
My sister's CHI cost $100 and my straightener cost about $40. And I am not just saying this, I like mine SO MUCH BETTER! My sister has gone through 2 CHIs since I have had my one Helen of Troy Strightener because hers seem to break more easily. I dunno...considering what I have seen from my sister's CHI and my knock-off, I would never buy a CHI. When something happens to my straightener, I will get another one exactly like it.