Mix Tecnologia Ltda, a Brazilian tech company, have announced that they will soon be selling a Kindle clone for 890 Brazilian Reals (~ $506 USD). (No, that's not a mistake. I can't imagine that they're going to sell all that many at that price.) The Leitor-d is based on a 6" Eink screen, and has a microSDHC card slot, keyboard, and otherwise unremarkable hardware specs. I don't think it has Wifi (or wireless of any kind). But according to the website it has broad format support including Epub, Kindle, PDF, and CHM.
If you're in Sao Paulo tomorrow you have the chance to see the Leitor-d at Bienal do Livro, a book fair.