says service history shows a timing belt, it should have had this changed at 60k and 120k, altho if it was done at 100k as per the original recommended mileage in the service book, then it should be done at 160k next, also doesn't say full history, so check that gaps in the history aren't recent.
so if the timing belt does need doing thats £400-£500 adjustment on the value
if all is well and belts aren't needed u can pick a similar reasonable one up for around £2k to £2,500, maybe a little less