American University to University of South Carolina-Columbia buses and trains from $37

Here are some trips other travelers have found on Routefriend.
$37
10h 55m
0 stops
Megabus
$43
12h 25m
1 stop
Amtrak Megabus
$49
11h 49m
1 stop
Amtrak Megabus
$69
14h 43m
2 stops
Megabus Amtrak
$79
16h 0m
1 stop
Amtrak Megabus
$87
10h 39m
0 stops
Amtrak