I think us border to us border travel would be expensive with my standarts but crossing the mexica with a bus cheap , even university girls do that trip. I sometimes see some turkish girls blogs and they criss cross these lenghts by bus , 48 hours or longer trips at south america. I criss crossed the med road several times with thumb with zero money. If you sleep regularly , if you eat , it can be done. Lots of african immigrants crosses the border lines from africa to germany , passing here. Some africans crosses the sahara desert by walking. Selling 300 dollar pictures and going to brazil is not me.