Globe Institute of Technology to Carnegie Mellon University buses and trains from $8

Here are some trips other travelers have found on Routefriend.
$8
7h 19m
0 stops
Greyhound
$73
9h 13m
0 stops
Amtrak
$77
10h 9m
2 stops
NJTransit Amtrak
$88
11h 10m
3 stops
NJTransit Amtrak
$101
12h 6m
3 stops
NJTransit Amtrak
$109
11h 34m
2 stops
CoachUSA Amtrak