My wifes 206 had an advisory item at mot. Partially seized brake compensator valve. Next year it will need changing the garage informed me and It will be about 250 quid all in.
With this in her mind at a boot sale recently 2 gents were discussing a part for sale and it was left as he didn't think it was what he needed. With that my wife stepped in and grabbed it for a fiver! Brand new in the box genuine pug part compensator valve!