Never had these until I moved to Italy. They are grown mostly in Southern Italy, Morocco and South America. They are delicious.
At the market I go to, (Trionfale) you can buy a kilo for 1 euro. This morning I noticed they were over 3 euros per kilo at the Campo dei Fiori market. This is why I walk all the way to Trionfale...over triple the price? Uhm no.