Why is he asking for such expensive items all of a sudden? 1 million +

He does that. There's a board in feedback about it.

https://subeta.net/forums.php/read/853139/Feedback-Carls-Quests

I do him all the time he never has asked me for such high priced items.

Then you've been lucky, apparently, because people posting on that board are largely saying it's normal.