When you have an Instagram account there are a number of ways of growing your followers. 
One popular way is to advertise on a large account in your niche.
For example,if the account has 500,000 followers then each post will normally attract a lot of interest.
The engagement is measured by likes and comments.
Your post will be on the account for a time determined between you and the seller.
By advertising ,your post will attract interest and hopefully result in extra followers and/or extra business.
There are a number of ways of finding these accounts.
One way is to look at accounts in your niche and if they are advertising, that will be outlined in their bio.
Sometimes you will be approched by accounts who will offer their services.
However the account is found,it is necessary to look beneath the service.
Just because the account has a large number of followers doesn’t mean that it is good for advertising.
There are a number of things to consider :
The engagement on each post.This can easily be found by hovering the cursor over the post.
You will see the number of likes and the number of comments.
We must also check that the the number of followers is growing consistently, i.e. by a similar amount every day.
Also the number of following.
If there are wild fluctuations in these numbers the account is probably using a bot to follow/unfollow.
Instagram is not in favour of this approach and it also means the followers are probably worthless.
Fortunately there is a site call socialblade which allows you to check these numbers.
Please watch the video below and let me know if you have any questions.
Online Marketing with John Hayes 