If you purchase from Craig's list, know where the MH comes from. There have been a lot of floods in the last few years and people making a lot of money selling flooded cars and RV's.
With that said we purchased our RV from Craig's List and are very happy with it. Look at the sellers car, inside as well as out, if possible visit his or hers house. You can get a idea how well the person takes care of his/her property.
You can get a idea about, the book by it's cover.
A good mechanic helps.
Good luck