You don't have to pay for the subscription. It comes with your YTTV. You just have to log into ESPN with your YTTV info when it asks. If you can download the YTTV app, then you can also download the ESPN app onto your tv.You can't get ESPN+ or SEC+ games on YTTV. Only on the ESPN website on a computer when you select your TV provider as YTTV. But on a full TV you have to download the ESPN app and then pay for the subscription for the rest of November, then immediately cancel. As someone above said, for the month of Nov it breaks down to $3 per game, and you won't need it again for the rest of the season after November. I prefer watching the game on my TV than at my computer.
Another "trick" ESPN plays - you can't airplay from your phone/tablet/computer to the TV for some reason. Every time I've tried it's either blocked or extremely poor quality.
If you have a trick with finding SEC+ or ESPN+ on YouTubeTV, please let us know.