@Syanalassa I agree that it may look that way but MC never said that he wants sword as payment and he didn't ask anything for attempted murder. So basically he could get money or something as apology from her and then sword as a payment. Now, as I understood, he hopes that she realizes herself that MC wants sword and hopes that she will suddenly change her character (given how everyone, including her, acted it is obvious that she would say something like "You disrespected me by not buying my sword, so this job was your way of making an apology") and give that sword to her.
So yeah, this is my reasoning for that comment.