[celticninja]

You can still buy them and sell them. What you can't do is use leverage to bet on changes in the price as, for example, you can on https://www.plus500.co.uk/

Or any other number of Forex sites. These sites usually come with a warning that most users lose money. That you can lose more money than you have staked is the issue, but (I am assuming) the larger possible swings with crypto mean that both the upside and downside is even greater than with traditional fiat currency trading.