I mean... why not look yourself?
Patreon has it on his front page at the top:
Abelius
is creating Pizza Hot!
- 355 paid members
- 15 posts
- $2,089/month
SubscribeStar shows all the different subscription tiers if you scroll down a little, each tier show their monthly cost and how many people are subscribed to each. I trust you can do basic math to add them yourself but it comes out to a bit over $7300 / month with both combined.
Edit: I want to make it clear that I am not hating on the dev himself, I just think its pathetic of both him and anyone defending his actions because it does not matter if $7000 is enough for him to live a luxurious life on its own or not or if a "real" software developer earns $200k a year doing a FULL TIME JOB.
The point is that this is a lot of money, an absurd amount of money, for the amount of content that he is putting out. If people want to be idiots and support that lifestyle of his its their choice but people should not be here justifying it or trying to deflect criticism for it.