Amazon is now reporting on their Amazon.com.br website that the Kindle is available in 9 kiosks in Brazil's 2 largest cities. Five can be found in shopping malls in the São Paulo area, and the rest are located in and around Rio de Janeiro.
I can't find information on who is operating most of the kiosks, but the first kiosk was opened by the Brazilian cellphone retailer Superfone. That kiosk is operated under contract to Amazon, and as far as the customers can tell the kiosk is run by Amazon. There is a good chance that Superfone is running the other kiosks as well.
The kiosks sell the basic Kindle and Kindle Paperwhite as well as accessories. The KPW Wifi model retails for R$ 479 (about $223 USD), while the basic Kindle sells for R$ 299 ($148 USD).
image from Techlinhas