Sometimes buying a total duffer at the bottom of the market can be the better way forward - at least that way there are fewer things that will crop up to surprise you! LOL However, this only works out if you are doing the spanner work yourself.
Yes, general condition. Prod about underneath, inside and around the engine bay. The latter is often a really good indicator on the condition of the car: shouldn't be oily, just covered in road dust. Check coolant (should be clear and pink), check brake fluid (light caramel colour), check oil (it'll be black, but thin and not covered in mayo!)
Check that there are no clonks from the driveline forward or reverse. See how much the car slows on full lock (backward and forward at idle). It will slow down but not stall. If you can, do a one-wheel-up test (hard on an inspection visit!) and obviously check that the props etc are all connected. Walk away from any car where its been disconnected "to save fuel". It doesn't save fuel to do this, unless the VCU is FUBR'd.
Oh, and check that all the warning lights come on and go off as they should. The ABS/ TC/ HDC lamps should do a little dance (all come on, ABS goes out, all come on again, TC and HDC go out and ABS stays on - and won't go out until driven above a certain speed. If this does not happen (1) someones disconnected a bulb for a reason and (2) it'll fail the next MoT.
Happy hunting!