I think that NY/NJ is the only area where you will find that much dope already bagged up. I just searched for heroin busts in the area and found
this story about a heroin mill in the Bronx where 20,000 bags of dope were found.
That's why the dope in NY is so consistent. No drug rings are going to mill up that much dope into bags unless they know it's good product since you really can't hide behind a shitty product if it's stamped already since people will avoid the stamp if it's bad, and they will be stuck trying to move that much dope if the product has a bad reputation. Those bags look like they are nicely sized too, and it says they were distributed in NY and NJ.
To further answer Chinkys question about who runs it (cartels, gangs, sets etc), since it's mostly Dominicans they have ties to South America so it isn't as hard to get weight sent to them through the ports here since I'm sure they get good deals on kilos and could probably get a certain amount on credit at first so they can build the business up. The article said they were moving 3 kilos a week, so I'm sure they had family in South America that was working with them, allowing them to cut out some of the middlemen to keep the price per kilo lower than in other states.