itl go about 120+ derestricted. its sumthin like £3650 new, no its not really suitable for a 15 year old, unless you want to just look at it. You have to be at least 17 to ride it legally. It costs a bit to keep the girls in top condition, top end oil, parts etc. Not really a 15 year olds budget, unless you have rich parents. Soif u race it or wait 2 years to ride it then go ahead!