I would be careful. Engagement groups are quite easy for Instagram to find and are decidedly not liked. Every time someone tells me they are joining an engagement group, I ask them a few weeks later how it’s going. Most tell me that almost no one sees the posts except for the few in the engagement group; they usually end up quitting. When there feed is filled with no other posts but the engagement group they are in.

I would never pay for one, especially when there are so many free ones. I would say take a pass and put in the work. It’ll drive better results in the end.