Mileage Run Discussion - kayak sees what others don't see

Kayak is showing lots of itineraries for under $300 ai on croissant's site C2-C1, however, neither croissant, nor other booking sites are dropping fat. Any clues?

Kayak is showing lots of itineraries for under $300 ai on croissant's site C2-C1, however, neither croissant, nor other booking sites are dropping fat. Any clues?
Some people posted some answers in trick it forum...
Skyscanner and kayak are fetching wrong data from airlines servers or process it incorrectly (YQ/YR is missing).
but nobody found an OTA with the same prices...

you should ask the powers that be to move this to the trick-it thread