And the expectations are higher and higher for being juiced as possible to skip mechanics. Brel G4 is a crapshoot even if everyone has PLC. I personally feel Clown to be five times more stressful than even Brel or Kay given that a basic mistake will cause a wipe (generally this being people missing their mario). The investment for a decent 1540 is much higher relative to the gold value if its not a mokoko expressed character (50K minimum for a 5x3, way more if it was built previously and for higher qualities). You'll be sitting forever in the Kay NM lobby as an ilevel DPS without a support friend. Realistically at the 1540 ilevel this content can go from 1-2 hours depending on what happens in Clown or Brel G4. The combination of Clown/Brel NM/Kayangel is around 16K if you count the Brel G4 gold.
The collection of those three raids would pay out around 11-12K gold, rarely take more than an hour per character unless someone was an agent on portals, and had minimal gatekeeping at 1472.5 with 4x3 (which was what, a 10-20k investment?).