I couldn’t find the cost of the fire chaser.... but...
Wildwood Grove which included a counter service restaurant, water play area, indoor kids play area, the dragonflier family coaster, stand-alone restroom building, the wildwood tree with light up butterflies, and 4 flat rides cost 37 million.
Toy Story Land was around $250 million and that includes a family coaster, a counter service restaurant, a restroom building, and 2 flat rides under 1 roof. And changing the toy story mania q.
Toy story midway mania was already built for at least $100 million. So yeah.... that thing is a $350 million dollar land.
So Toy Story Land cost 10 times what Wildwood Grove cost.
Firechaser Express cost like 14 million dollars. Its a Gerstlauer family coaster though, so lower capacity and not "tough enough" for Disney wear and tear, so you'd need to get Vekoma, Mack or Intamin to get it, which would push the costs up.
Roller coasters that use fire:
- The indoor spinning coaster that travels Germany has a fire effect with its most recent name, Hollenblitz.
- Lethal Weapon Pursuit at Warner Bros Movie World in Germany used the Indiana Jones DLP coaster ride system for a dueling/racing coaster that ended with a racing car flipping above the tracks in a fireball. Alas, only one video subsists of that effect than ran from 1996 to 1999
- The powered coaster and flume share a mine show building at Europa Park with a small fire effect.
- Raging Spirits use 2 fire spots in addition to the iconic flaming stairs up front.
- Space Mountain at DLP didn't open with actual fire, but it had two sparklers at the Spark Trench, after B lift and right before the Tongue Loop. It was visible from the waiting line, but the sparklers selected didn't last more than a few months after opening.
There are others beside the obvious two Revenge of the Mummy, but those are the main ones.
The fire effect is seen at 1:09 and 2:32 above the track.