It's sad when family is willing to rip you off. Pay attention to your intuition in the future, he was giving off hustler vibes and it looks like you had an idea. Next time when someone seems sketchy, even if their family, don't trust them.

I'm sorry you appear to have gotten jacked, especially from a family member. I hope he eventually delivers what he promised, or you could wait at the bus stop for him if your a confrontational person.

Good luck.