I grew a pack of AK47 about 4 or 5 years ago and was pleased with what I found. Uniform plants, no issues, great mango and ginger aromas, GREAT yields, but with that being said I'm not sure I'd go out of my way to buy them. There are lots of great packs of seeds out there. I let my AK47 go only after I crossed her to a kali mist male and liked that cross better.
In regards to the Kali Mist seed pack I bought around the same time, it's legit. Mine flowers for 115 days or so and is the most positive, mood elevating, euphoric herb I've ever smoked. Forum friends have enjoyed their gifted samples and others have really liked her crosses. I would in fact go out of my way to buy a pack of Kali Mist. She's only for the advanced grower though.