6 Kilos for $9.77 a kilo, won't find anything cheaper than that unless you don't care much about smashed packages.
This seller has it for $8.50 a kilo, but my experience with Amazon is that they don't care much about the packages and it comes tightly packed in one box, and freshness is always a concern for me, compared to Pampa Direct, who usually cushions and seals the packages, and sends them directly from Argentina.