With the forge rework I think it makes sense to reduce the cost of heat amplifiers. 5000 energy for a 30 day x2 multiplier is incredibly high when you can purchase 30 day trinket and weapon slots for 150/250e. Even a tenth of that would not be worth it considering most heat goes to waste at the elevator. The value is somewhere around 150e for 30d to me, good for leveling up new gear now that the forge is fixed.
I second this. Heat amplifiers have always been way too expensive for zero reason. The 30 day ones obtained through Guardians Armor Pack only even resell for 25k crowns, yet we see them for 5ke on the supply depot. It just doesn't make sense. I'd say anywhere of 250 to even 500e for a 30 day heat amplifier seems reasonable.