BNB may well cost more than $ 50 in the future, so buying it is not too late. However, it must be borne in mind that this is a 100% centralized coin highly dependent on the exchange.
Which exchange launched own coin, actually those are depend on long term survive for own exchange platform. Binance price gradually increased, not late to buy BNB because still enough time in your hand to invest in big centralized project and secure investment.