I put $1000 in. Now I have over $100,000. I vowed to never invest any more and i don't want to cash out as i'm in Australia and the commission fees are 5% (that has taken over 3 years).
Not to say that this is how he earned his money, but had he invested in the Ethereum ICO when it was first launched, he would have received two thousand ETH for one BTC. One BTC was worth, on average at the time, six hundred ish dollars. Two thousand ETH is now worth slightly less than $100,000.