Pretty sure they got the dish free, they did an episode on it. I've watched Delos since the beginning. I'd be surprised if they make that sort of money.
Nevermind the income they get from merch, sponsors and YT ads.
Not trying to be negative, I say good on them, they worked hard on it, and have been doing it for years.
Oh for sure, I support them on patreon :) GOod on them for finding a way to live their best life.
I think you have to take into account patreon monthly limits people can set too. It still seems like it's a high estimate.
One site I found estimates the income much lower, https://socialblade.com/youtube/c/svdelos, though I have no idea of the accuracy, and this estimate seems pretty low.
I'd be really curious to know for sure, but I'm sure they won't say :)