If your heart says yes then buy it it's only $2500, if it's the high level system then the arrow exhaust would set you back around $1200. Look for the usual signs of abuse, loose headstock, worn disks, stretched chain worn sprockets, unusual knocks or rattles (loads of youtube vids of 07 speedy to give an idea of how they sound). If it has been looked after then 71k for a 12 year old bike is not that high, that's around 6k per year. Always worth trying to get a better price, nothing to loose by trying. Good luck.