You've probably been wary (bit like me) because your dad/grandad/uncle grew up in the age where engines lasted 50-60k before severe tinkering was required.
Secondly you've probably (like me) owned cars that need the cam belt, brakes, major (whacking great expensive) service at 50-60k........you have a chain on the Zed and your looking for one with the P3 completed so no issues at all.
10k should easily get you what your looking for unless your a bit touchy on the age of the car - we picked up a 54 plate ginger with full history, GT pack and 29k on the clock for £8700 over 6 months ago.
Don't be afraid to travel for one either - you could always see if a forum member who's in the local area could take a look at one for you first.