Formations interview questions

Formations seems like a really interesting company; they create the interpretive exhibits for museums. I was very excited when I got the interview, but they immediately said they'd need to make sure I was comfortable with the salary range--which I wasn't. 33-37K?? I went to the interview anyway, and it was very productive, the group I interviewed was friendly, we talked for over an hour and a half. I told them I thought the pay was very low for the level of responsibility and skill required. They agreed, but said that wasn't their decision, and asked me what I'd need to accept. I said at least 50K. Didn't get an offer, I did get a letter 6 months later saying they found someone. I thought that was nice.