2002 Yaris Verso auto - how much?

[Hucknall Me]

Hi everyone, my first time here so please be kind.

My Mum has decided to give up driving, after 70 years unblemished record !!
With great sadness she has asked me to sell her 2002 Yaris Verso GS auto for her, honestly she cried as I drove it away.
It has 58800 miles on it, and is in pretty good nick. A slight scrape on the left front bumper, and a tiny ding just behind the petrol filler (paint NOT cracked) are it's only blemishes, it has no rust at all. All electrics are good, and mechanically it's great. I drove it 130 miles from Gloucester to Nottingham yesterday, and can't fault it. It has had 2 previous owners, Mum has owned it since 2010. It's all clean inside, never had a smoker in it as far as I know. We have full service history for it.

I've been researching prices, but these cars are advertised at all sorts of prices, so I'm struggling to know what to advertise it for.
Any expert ideas anyone ?