Good luck with that. but anyone who is interested to buy that should know that that's someone's personal account. with his own pictures and videos. these kind of Instagram accounts are very hard to rebrand for obvious reasons. rebranding them would loose a lot of followings.
also the engagements of the posts are very low compared to the followers which make me think most of the followers are fake.
I agreed, any most of the cases they will ban your id's if they somehow identify the particular id is changed hand.
Rather than buying account i suggest to use boost service, you could use your brand new ids and boost your post by spending some penny. it will attract the followers/buyers who are interested.