I listen to headphones all the time and often get samples in from various places. When I listen to them I don't have a price list in front of me, so I normally form a rough ballpark in my head regarding cost from the OVERALL quality of sound (but not specifics).
The reaction I've had from people who I've given a demo of these to in store has been exactly the same:
them: "wow, these sound good!"
me: "how much do you think they cost, ballpark"
them: "I don't know, $200-$300?"
me: "try less than $100"
them:
me: "I know!"
them: "I'll take a pair!"
me: "they aren't in stock yet"
them:
Now they're in stock, so you don't have to

and

at me, you can just

or

instead
