Where to buy Already Established youtube channels.

After seeing in a post someone was trying to sell a channel with 30,000 subscribers (Unfortunately we couldn't get a deal)
But I was wondering is there a place to go to buy youtube channels with built followings?
I would love to buy a gaming channel with 40,000+ subscribers that are active and start from there.
As I don't have the time to start from the beginning nor the money to pay google for advertisements and fake subscribers have no point.

I would just make Pewdiepie and I have money…

Where to buy Already Established youtube channels.