Why the interviewer is asking this question: The interviewer is asking to align expectations for the role with your long-term expectations. While interviewers typically want solid alignment on near term (i.e. under 5 years) expectations, more latitude can and will be given for longer term goals.
If they don't want to give benefits to stocker and cashiers they should have part time hours and paid $17.50 per hour no benefits. Also how many teenagers would like a parttime job from 3 pm until 7pm and maybe get the pay they give their cashiers $8 -9 an hour.
For example, according to the Bureau of Labor Statistics, loss prevention agents in Texas earned an average hourly wage of $30.50, as of May 2010. Loss prevention agents in Arkansas made an average of around $30 per hour, while those in New Jersey earned an average hourly wage of $29.50. However, the top-paying location was Virginia, where private detectives, including loss prevention agents, made an average hourly wage of $32 per hour.