None of them are available in stores in Brazil. Sparkfun even classifies the country as "restricted" to sell to (what a pitty, since I would like to see their mini ESP32 C6 thingy working). And I don´t know the reason for the restriction. We don´t have atomic bombs, only have solid fuel rockets, no spaceships, no other dimension portals... etc... etc...
I was able to buy a Nano 33 IoT and a Nano Every from Arduino in US though.
In any case, prices become outrageous after adding taxes and import fees. 