Out of curiosity I looked up a map of Yuengling distribution. Apparently they are a regional brewery. Here's their distribution map.They likely sell out all of their production locally, so no need to transport it more than a State or two.
Likely, that would also keep costs down.
There are guys around here who will road trip to Indiana to buy a pickup truck bed full of Yuengling. Seems a little crazy to me. I'll bring a couple cases home if I get down that way.