Auto Insurance? (Just liability)?

So I'm 17 and my mom just got a new car so for the time being she's letting me have her old car. It's either a 2000 or 2001 Ford Escape. The vehicle is fully paid off she owns it, there for I don't need full Comprehensive coverage, nor could I even afford it especially since I just started work that's why I'm only going to get Liability. I know you're probably going to say why don't I just go get a quote and why am I even on here asking this question. Well, I called them and I was put on hold for a good hour and a half and I don't even like giving info out over the phone, when I went on their website it took my info then said that I couldn't get a quote online. Stupid right? That's why I'm on here asking a simple, quicj, easy question. I'm not asking for a specific number, I just want to know the range of how much it'll cost for just Liability Auto Insurance? Like, is it going to be $400-800 amonth or what? Just a general quick range. I will throw this out there that I'm 17, male, good grades, 2001 Ford Escape, safe driver, had a permit for 2 years, and I had driver's ed. I don't know if any of that will help or not. But any help that isn't sarcastic or dickish is appreciated.

You are 17, a minor, and can't enter an ongoing financial obligation like insurance. Your only choice is to be added to your parents policy as an additional driver, and when they call you have an exact amount.