I do know that Ayanokoji does not have 8K points. They show his points pretty steady through out the episodes. Just wondering if maybe you misread the scene Kray?
Nope,

EP3 @ 22:33 - 10561
EP4 @ 07:12 - 82235
EP4 @ 22:33 - 8320

After EP3, I thought he spent most of his money to get test answers etc.