I once interviewed with a company that would not pay for travel. I saw it as a red flag but I went anyway. They are in a city I was interested in visiting, so I

I once interviewed with a company that would not pay for travel. I saw it as a red flag but I went anyway. They are in a city I was interested in visiting, so I scheduled a half day interview for a Monday and took a long weekend. The trip was a lot of fun and I was happy to have a weekend away. I don't regret the trip. Every interview went well and we had a good lunch before I left. Two hours later I got a call from the team lead. He was very excited to tell me that an offer was being put together and I'd have it by the end of the day. On my way to the airport the salary offer came. It was lower than the ballpark figure we discussed before I came in for the on-site interviews and lower than my current salary. I immediately declined and declined further negotiation. Lesson learned.