Velocity Kickboxing in Kennesaw has a program if you only want to do BJJ for 69$ a month, give or take, I can't remember for sure.
The main guy is Steve Headen, a Gracie B.B. excellent instructor, IMO. 770-792-7925, they also have other locations in Atlanta. Look me up if you go, and when I heal up.
http://www.velocitykickboxing.com/locations.html