How much can i sell a very massive 15x mega rich in research?? and how much can i charge for enriching a planet for another planet???

my guess would be around 3k ctp for that 15x mega since its a decent size

a lot...ive seen much less than that go for 2700ctp easy, so im guessing 3500ctp minimum

a friend that i know does mining planets up, not totally sure on the cost but he did up a toxic to 15x MR (not sure on what it started as tho) for 13b credits so that could give you an idea on the cost to sell/buy for

Thanks for the feedback i needed to know around how much before i start to sell some planets off...

be nice to have a price for each level of upgrade, that way someone could come to you, share a planet then go back to there legion, every 2 days they send payment for each upgrade until its 15x mega rich or lower if that is what they want then ask you to remove all the defense + or attack so they can invade it