Promotion costs a lot of money. But I agree that it is important to promote the services that people would know about the advantages of the project.
But is project useful the more and more people will use it who interested in cryptocurrencies.
It is very simple to buy and sell cryptocurrency using bank card. I think that such service will be very useful, because many exchanges do not allow to buy crypto from bank card.
Cryptocurrency becomes very popular now and a lot of useful services appear like Koinal to make the use of cryptocurrency more simple to all the people.