I know it's a long shot, but is anyone else experiencing a sudden increase in click costs in Japan? My most recent ad was getting 10% CTR but $0.50 CPC, and similar high costs on 3 other accounts. Just last week a 10% CTR was getting me sub $0.10. Also if anyone has an explanation for something like this I'd love to know. Thanks
I'm afraid it's just you. Take a look at the official CPM numbers from untainted sources for all the different devices in Japan:

Probably just the inevitable spiral of downfall from an unsustainably high CTR
Thanks timtetra. Can you tell me where you get this data from?
It's just strange because the account I was getting the $0.50 CPC with 10% ctr was a fresh account. If it means anything, I'm running nutra.
I used a new creative and got a CTR-appropriate CPC. Facebook must've recognized my ads on all the different accounts. Obviously the ads and texts were slightly modified, but I guess not enough to fool Facebook. Yet they just charged me up the ass for clicks without boxing me...thanks? lol
Update: Launched more different ads but ended up getting the high CPCs again...back to the drawing board.