Semidynamics interview questions

I was approached by a recruiter. The whole process took 3 weeks. The 3 people I interviewed with were very professional and polite! The only thing that could be better is the salary expectations conversation. I asked for 55k. Nothing was said about it and we proceed to the two technical interviews. In the end they offered a much lower salary. I declined the offer. We could have avoided the two technical interviews if we had a more open discussion on salary expectations.