Mac Haik Enterprises interview questions

I applied to Mac Haik Fork-Lincoln online through zip recruiter. I submitted my resume online and heard back that same day. An interview was scheduled the following day in Austin, Tx where "all of the interviews in Texas take place." I filled an application with employment history, etc. I was then taken back to the interviewing room where I was asked a couple of questions and salary expectations. If you work hard, it's 'easy' to earn 4500-9000 a month. I was offered the position but was asked to purchase a 600$ training program that minute. It couldn't wait for later that day as he only had one available position that needed to be filled immediately. I didn't understand the urgency for paying the 600$ on the spot and got irritated by the interviewers insistence, so I had to decline the offer.