Adding to this, he mentions "having over 200 Ultra balls", At the beginning of the game you can hold 350 items. But if Chris can have 200 of an specific type of ball sitting there unused, plus other kinds of balls and other items you get saddled with, to have it all I'm sure he already sank real world money into maxing out his item and pokemon storage. Granted that upgrade is only $2 in real world money, but the limit is 2000 items, and each time you upgrade you can have 50 extra items, so napkin math says he could've spent $66 on item storage upgrade alone. Add a similar amount to max out his pokemon storage because of course he will.
Also when you run out of balls the game wants you to go out and walk to a stop where you can get more, quick, free and gives you exercise. OR you could pay real world money for more. Each stop you visit gives you 4-5 items, not all of which are balls. If you wait 5 minutes you can get items from the same stop again, but it'll give you less items, up to 3. I'm sure that's meant to keep you moving and visiting more stops. So to amass such an amount of balls, unless he's super lucky and a Mc D's near him has a pokestop for him to hang there all day, using it over and over, I'm sure he's paying real money for balls. He probably isn't walking all over every stop in his city, though he could be driving to them, Godbear forbid.
So yeah he's blowing tons of cash in this, which is no surprise, this is the dude who blew $2000 into that stupid Simpsons tapping game. (I did the math back then too, yes I'm a huge autistic idiot) I wonder if he even still "plays" that Simpsons game.