Neil
Even if you'd spent half a day looking at both properties, she would still have gone for the lower quote and you would have been worse off, having spent half a day looking at the properties.
Some, no matter their social status, or apparent wealth will always go for the lowest quote.
Of course it's a pain, but do you think you might have been an equally big pain to others when you started up, getting work they would have normally done ?
It's a big cake, just getting more people nibbling at it.