For some reason the pixels are moving away from my bar, also 20%-25% cost says 1,5m (realized it's a cap M not lower case so it probably is billion) not sure that that means but 15 and 150m was not enough will try again at 1.5b
When you prestige it sets the planet core cost back to the base so once you get to the point where you are slow to gain planet cores it makes sense to reset to get them faster to get more ichor/sec = )