Has a lot to do with how you ask:
"What value shall I put on your item while we have it in our store?"
I don't ask what it's worth. I'd probably give or take 30% of what
they say. If it's worth $3000 and they say $4000 I wouldn't say much.
On the other hand A $5000 diamond and the customer says $15,000 is
another matter. In this case I then ASK how they came to that. It
it's a struggle at this point I tell the customer "I can not give you
a receipt for that amount. It would sell in our store for $5000 -
$7000. If you'd like I can do the job right now rather than have you
leave it, we can do it while you wait and the charge would be (we
quote 50% higher)."
That usually seals it.
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