There are many resturants you can buy bagels from. Here are just a few.
Einstein Bros. Bagels
Einstein's has some great bagels. My personal favorite from them is their Asiago. They also make sure to put on lots of smear. You can also get bagel sandwiches from them. There are even some locations on UGA's campus.
Goldbergs Fine Foods
A sit down breakfast place that offers a variety of tasty bagels.They also have a to-go counter just for bagels. If you go here definitely try out their blueberry bagel!
Dunkin' Donuts
I won't lie; these won't be the best bagels you've ever tasted, but they're not too bad. This is a good place to go though it your craving a cheap iced coffee to go with your bagel.
Panera Bread
Panera might not be the first place you think of for bagels, but they do have some quite good ones. If you have a sweet tooth, try their cinnamon crunch bagel.