Someone ask me a question after introducing bitcoin to him, if he can start up with $30 and grow with it but I told him bitcoin is wide and high in volume, price and market, that's means whatever you're starting with determine the outcome of the market like for example; if you start with $30 and eventually the market goes up to a little increase of $32 can not be compared with someone who started same time with you, at the rate $100.
So also when the market is down to some extent, the person with $30 may likely loss more because of the money is small. Blockchain has the minimum amount one can invest if am not mistaken but if your amount is too small may be difficult to make easy progress.
What do you think about my advised to him?
I see your suggestion is good. people who start investing in Bitcoin with small capital will only get small profits too, conversely, those who invest with large capital will get big profits too, but you don't explain that Bitcoin won't make someone rich in 1 night. btw, I'm already wary of giving advice to people who only invest small money in bitcoin, most of them hope to make 1 million dollars by just buying $50 worth of bitcoin LOL