I have done GrowthX. Although they market it well, but recently I have heard from newer batches that their structure has started to crumble as they are trying to increase batch size.
Only thing which I felt of value is capstone which you shouldn’t miss at any cost. Also, you should be able to devote some 2-3 hours at least everyday to the course to get some good learning out of it (during capstone, it can stretch to 7-8 hours as well).
I did it as part of my company L&D, but if given the choice to pay with my own money, I would look for some other programs which justify 75k cost. At best, 40k seems fair value to me.
A fair warning though, because they are currently in growth stage, they are using some grey tactics to lure new users. For e.g. The capstone groups, their lead and co-lead are made in such a way that top performers for the assignments are bunched in 2-3 groups. By doing this they make sure their demo day goes smooth as they are confident that these people will anyways be in top teams and will have better presentations than anyone else.