A friend of mine is going through a difficult situation and I was hoping to find some guidance for them. They have an online business where they became acquainted with a seller in Europe who sells merchandise and developed a relationship. Without any contracts they agreed to do business in a way where merchandise was shipped from seller to my friend ahead of time and seller would be paid upon the sale of merchandise by my friend in USA. I have no idea why the seller would do this. It was built upon a personal trust and at first worked, but then friend went through a difficult time sold merchandise and wasn't able to repay seller. Now seller is demanding payment and threats of lawsuit. There was no official contract or agreement with anything signed, just word of mouth. Does my friend have anything legally to worry about if there is no official contract? Can the seller do anything from outside the country as far as a lawsuit? It wasn't a large amount of money from my understanding. How best for my friend to handle this mess? I appreciate any advice, I don't know how people get into situations like this.