I've been in the industry for a long time.......... Don't ask for a specific dollar amount.
Ask instead, "what is the range of pay for this position?"
When they answer, let's say they say it pays 10-15 dollars per hour.
Your response would be, "Based on my experience, I feel I'm worth 13 or 14. What would I have to do to get the 15?"
That's the best way, I've heard that question handled. The folks who manage Best Buy's car shop aren't exerienced enough negotiators to handle that. You'll win.
good luck