If you had spend 100$ in cryptocurrency 2 years ago , how much would you have today?
To find that out let's use https://web.archive.org
It allows you to go back in time with any website, so I checked http://coinmarketcap.com
Here is the back in time link :)
https://web.archive.org/web/20150423055748/coinmarketcap.com
So lets say you spend 10$ on each of the top 10 coins.....