Again, have you also never rented a game? How much does it cost to rent 5 games? Well I'm renting 5 games to play them before they come out. Same thing, plus I get a discount thrown in for the DLC.
Assuming with the discount you save $16 on DLC, you're paying $9 for early access to sports games. Now, I'm all for spending your money how you wish, I mean, it's your money and you'll speak with your wallet, but I'm asking you to reconsider the deal. It's been a while since I've played sports games as the good ones aren't on PC, but back when I did, they were essentially the same each year with a couple features added in, but nothing big. I have Madden 04 and Madden 07 and if I were to play them both, I'd have a difficult time telling the two apart. (even though I LOVE football games)
So I gotta ask, couldn't you just play the previous game for the 3 days and save the 9 bucks?