It’s nice for its parts but you can definitely feel the missing pieces when building with it as a whole. The cubic nature of the lost dungeon portion makes them very situational and difficult to use. The lack of triangle wedges means you need substitutions to make anything semi decent. (Black ice wedge foundations has been the closest match I’ve found.) The curved wall is missing a curved ceiling piece. Also the jagged walls only sync up when placed in the matching direction, but placing pillars in between walls (included in the set) can hide this.

Positives:
Set looks really dank and dark which is great, the double door gate with the skulls is nice and the wall with the epitaph is nice although I wish there was a plain version on both sides.
Spiral staircase is a little hard to place but it’s cool and has the pieces necessary to make it feel flush with its surroundings. The iron bar wall and door seem to universally fit with a lot of other build sets.

The reason it’s more expensive is they’ve thrown in a coffin with the set they’ve valued alone at 500cc. Probably to justify how unfinished the set is. Even though I love the coffin I would have preferred friggin wedge pieces.