buying shoutouts

Hey, after a few times testing I see that buying shoutouts via story and feed posts are really not the money worth. Even with good content (funny niche) there come only very few followers int the end. Tested it with different pages between 50k and 100k and it really surprised me that the...

Can anyone share his experience buying shoutouts? Does it pay off? I mean, does your number of followers increase significantly if you, for example, buy a shoutout from a 231k Account with +-5000 likes and +-1000 comments per photo?