For EU buyers, this isn't a grass fed meat website but rather a seller from ebay from which I have bought the most delicious pure
"Pata Negra, jamon ibérico de bellota" ham, purely acorn fed.
Pata negra is well known in Spain and Portugal as a high standard breed of pork. If you read wikipedia's entry, you'll see that within Pata Negra bellota is the finest because of the way the piglets are raised and fed.
Our ham is about 6kg but it's a whole leg so you have to acount for the bone, and it is a very long one at that. I would think that in meat we initially had about 5 to 5.5kg. It is utterly delicious and it comes with a very thick fat layer, it actually took us a while to reach the meat :)
I would strongly advise any buyers to also get a ham stand, and a fork with protection plus a carving knife, I ended up with some pretty nasty cuts on my fingers before I had the stand and the fork. Even with the fork, I am now only cutting the ham directing the knife away from me.
It is an auction type of buy, so the price may vary. The seller always starts at 99p, but you can end up anywhere between 35 and 100pounds (roughly 125 Euros at the current rate), we bought ours for 48, plus 24 of delivery. I have done a lot of searching and, all in all, it is the best and cheapest bellota ham I have so far found delivering to UK. If you are in the habit of buying ham, any type of ham, buying this one will probably end up being cheaper because you're buying in bulk. Where I live it ends up being even cheaper than supermarket nitrate loaded ham which, sold at 200g a packet, ends up being twice the price, if not more.
Link here:
_http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=261103144242
He also has more in store and keeps adding new ones.