Buy with cheap altcoin? But I think $100 is very little.
You have to think about a hundred of dollars to invest in Bitcoin and the other hundred of dollars into Altcoin or let's say Ethereum. Surely Bitcoin will give you high profit than Altcoin. Ethereum and other Altcoin are having value that was actually lying flat for a long time and unlike Bitcoin, it's price increase is insane.
I think everyone just wants to be rich tomorrow. Many altcoin made this year good for longing compared of last year. I put $100 today in 5 cent altcoin can possibily return me big sum next year.