Just been routing through my tool box and found my spare PF09 (red) sensor, seeing as my car no longer runs this type, i may as well flog it.
It was bought off here as far as i can remember, but i never used it, just kept it as a spare.
It was sold to me in working order, and I'm fairly sure it came off someone reputable, but i can't remember who!

£30 posted?

Pics on request, although I'm sure you know what they look like.