USA Bus Lines

What are some bus lines that travel between South Carolina and Washington, DC?

Preferably on the cheaper side is what we're looking for, but anything that travels between the two would be greatly appreciated. :)

Public Comments

1. greyhound
2. Greyhound is the only one...and I have nothing good to say about Greyhound. They have filthy, decrepit, poorly staffed stations, filthy, ancient, falling-apart, very late buses driven by rude, late drivers...and they lose your luggage! I would recommend looking on Craigslist under rideshare or try the new ridefinder site called Zimride.