oh yes I remember this, and in areas you've said you don't want, and completely ignoring your other requirements.
Why not ask to see a couple of the most expensive places they've sent you? Wander round ineffectively (don't ask any sensible questions) looking star struck. Then when they ask for feedback say "we couldn't possibly afford a house like that, but just wanted to see the inside"
They should get the message, and if they don't the owners will make sure they do