To get tickets to the Clemson vs Oklahoma game, you’re not going to find a cheap price. According to Seatgeek.com, the average resale ticket price for the game is $375 per ticket.
Unfortunately, tickets for the game were sold out well before the teams were announced, so there are no more tickets at face value.
Now, you can find some cheaper prices on places like ticketmaster.com or stubhub, but I have not found anything cheaper than $134.00 per ticket and that was for the upper endzone. They go on up from there and end in several thousands.