I don't think £25 is bad for one as it's quite a very important part.
Not only is it a splash guard protecting the expensive alternator but also a stone guard.
You see, events could follow this pattern.
1, stones get flicked up into auxiliary belt.
2, auxiliary belt fails.
3, failed auxiliary belt gets into bottom pulley.
4, said auxiliary belt takes out the cambelt.
5, catastrophic engine failure occurres.
6, you either walk away and scrap the car losing all you've put into it or find a replacement unknown engine.
All for the sake of a £25 part.
It has happened.
WHALE OIL BEEF HOOKED
(THE ARTIST FORMERLY KNOWN AS ANDY THE TYRE MAN)