I sold DirecTV for an internship in college, of course we tell you that you gon save money
They do a kinda sorta bundle with AT&T, but if they set up the contracts the same as when I was there, you'll get 2 years but the first year is discounted pricing. It would usually be around 90-100 with a great channel package, along with 3 months free of some premium channels like HBO,, but after that first year the price shoots up almost double,, so you may go from 90 to 180 real quick.
I encourage you to read the whole contract, and if you have a sales guy currently trying to get you, I'd question him up and down, leave no stone unturned cause DirecTV, lIke all these cable companies, ultimately just want to finesse you