dont worry about the mileage as long as its got history they are quite good little hatches the saxo.
There is a market for them so £1300 is about right, anything under £1k is a good deal. I race in 750 mc stock hatch where saxo vtr is the current quickest thing, plenty of people would buy it as a base car for conversion at only £1k, tbh the mileage is irrelevant.