Got called by a recruiter, the team wanted to know if I am culture fit. They schedule a remote skype interview for 3 hours and check if I am culture fit. Next is onsite interview, they asked me if I want to fly to that location which is 2 hour technical. And one of the guy in previous round mentioned they dont give offer unless they do onsite. But I have to pay out of my own pocket expense. I am approx 4 years experience and the position is Senior SW. I dont know are they really interested?