Earlier this week, a rumor announced the possibility that Google, the owner of YouTube, will make some payed channels. Witch surprised many people with great skepticism.
As stated in The Verge, the rumor was therefore justified and some channels will be paid from today. For the moment it concerns a small number of them as UFC and Sesame Street. Subscription rates starting at 0.99$ per month, this is not going to kill anyone. The Sesame Street channel is paid for 1.99$, as you can see above, this will allow you to watch full episodes.
As announced in the U.S. site, some channels may benefit from a free trial for 14 days. At the moment the program is launched on a small scale but will deploy very quickly. You can also subscribe to your favorite TV decoder from your YouTube channel.