Your buddy also might have a house insured with his company too which will make it cheap since they dont' give a crap about the bike. Plus he might have some great credit too which makes a difference. I doubt at 19 you'll have much credit (Which will play a huge role if you finance a bike). He also might have hte bike paid off and crap loads of ticket making the liability a lot.

I'm 24 now and did a quote on a 2007 CBR600rr just to see what it was. For full coverage (Which you need on a bike you don't have paid off). It was roughly $260 a month. I have 1 stop sign violation and fairly decent credit.

On my current bike which is a paid for 1996 Honda CBR600 F3 I pay $300 a year for liability (Which I have to pay friday damnit!!!). That is with Allstate but they said they should be able to get it cheaper. I also did the "Smith safety foundation" training for my work wich knocks the price down some (And more if you do the MSF).

When I had my 1994 Yamaha SecaII it was $107 a year for liability with me having a speeding ticket and stop sign at the the time. That was with progressive.

At 19 I doubt you'll get financed so my best suggestion is find a decent beginner bike for $1500-3500 and pay cash or just try and get a personal loan if you can. Then pay liability. But don't do what many do which is buy a bike on a Yamaha or Honda credit card then get just liability on the bike. You'd hate to total a $10,000 bike and be making big interest payments on it forever.