[dkersten]

If you won't be happy with $Well-Justified-Price + $Extra because you feel they may have offered higher, then either your $Well-Justified-Price or your $Extra is too low, since you obviously wouldn't be happy with that amount anyway. If you feel the real $Well-Justified-Price + $Extra is higher than what they'd pay, then obviously you're not going to be happy with any outcome, so why are you wasting your time on this deal? The whole point of $Well-Justified-Priceis that its a good amount that you would happily walk away with and $Extra is exactly that - an added bonus. If they would have paid higher, good for them, they've got a discount, but you just walked away with an amount you decided would make you happy PLUS an added bonus.

Don't worry that they might have offered more. Be happy. If you can't be happy with that amount, you did the find a price you'd be happy with part wrong.

(Obviously not directed at parent, but rather agreeing with parent)