The price of the roller coaster is actually reasonable, because the set is *huge*. No unique pieces either, although a few incredibly rare pieces I’m sure.
For reference:
https://brickset.com/sets/10261-1/Roller-Coaster. 4124 pieces at £300, so 7.3 pence per piece.
Compare with the new Ultimate Y-Wing: https://brickset.com/sets/75181-1/Y-wing-Starfighter. 1967 pieces at £170, so 8.6p/piece.
Randomly picked City set: https://brickset.com/sets/60140-1/Bulldozer-Break-In. 561 pieces at £65, so 11.6p/piece.
The roller coaster is great value per-brick, especially considering the fact that IT’S A ROLLER COASTER.