If all friends are real and active than it's worth it. Just don't screw yourself over by signing in to them all with your own ip, purchase a private proxy for each account.
The friends are real i think,because the guy who sell them raise this profile's with his Facebook pages,for the activity they get 200-400 like/photo and i think is pretty decent when you think a page with 5000 Like has difficulty to get the same amount of likeIf all friends are real and active than it's worth it. Just don't screw yourself over by signing in to them all with your own ip, purchase a private proxy for each account.
This. If you plan to buy them, think about everything that could go wrong. Also, make sure you're able to verify (if needed) via mobile.