Found a source!!!!
in Austria has some Dwarf Brazilians in stock. They sell them for 28 €. More plants are due to arrive in April.
If you check the offer on the website you'll find a lot of rare bananas. I don't know if they're all available now and they haven't published prices yet for most of their offer.
They say on their website, that they don't have pics from all the plants, so there are "example pics" for some cultivars.
And I also hae no idea if they speak English and will ship within Europe, but why shouldn't they. I'll ask them. If they don't speak English, I could help out.
They also have Dw. Namwah!