An '03 R6 with 8K miles is worth about $4500. So I hope your car wasn't very nice cause I feel like you got screwed. To put things in perspective I see '06 Gixxer 600s with 4-5K miles for $5500 all over. I'm not trying to be a dick though. Have fun with it and be safe.
Oh, and if you plan on ridin a bike long term you are gonna get sick of that R6 real fast. 600s feel fast for about a month. I remember the first time I rode a 600 I thought it was absolutely insane. Now I have put a couple thousand miles on an'07 Ninja ZX-10 and I can honestly say I am used to it and it doesn't seem that fast. Don't get me wrong its a 9 second bike, but you get used to everything. Either way have fun man.