Walmart has it. It's the only place I have found it. I am from New Orleans but live in Oregon. Walmart has the best selections of foods from the south. Great place to grocery shop! Cheap with a HUGE selection.
Luzianne is specifically blended for iced tea -- it's a stronger taste (since it's drunk very sweet and very cold) and not as acidic as other orange pekoe tea bag teas are. If you've drunk "sweet tea" in the South, you've had Luzianne.