Bitcoin hit a record high above $8,200 on Monday, November 20. The surge follows a dismal September in which the cryptocurrency fell to $2,900 a coin on September 15. Two years ago, the idea of buying the virtual currency even at that price was laughable. After a rapid rise in value in 2013, the cryptocurrency's value more than halved by mid-2015. At its lowest point, one bitcoin was equal to about $230.