Just use this as part of what you do. You should already know exactly what the property is worth from your own DD.
While I agree with much in your posts, I believe this is pure fantasy.
You do not and cannot know the exact value of a property, and as a BA it's your job, imo, to find the lowest buy price you can, not pay what you think it's worth.
DD is an opinion.
As the next part of your post confirms, you
did'nt know what it was.
Comparables are history, and as your post also confirms, it's down trending market with lots of motivated sellers.
There's no such thing as "exact value" in a market system, there's a bid and offer.
If you offer a low ball couple of times then he/she won't be friendly much longer !
This depends on how you do it and your situation.
I don't have this problem, and unlike what many say here, I don't justify my offer with a coating of BS.
It's a buying bid, and it's strictly biz. The REA is not your your friend (nor foe). Ad no, he does'nt have to like you. He likes $$$.
When it's made in an noob way with lots of personal content, then the agent knows your a noob, thinks your a tyre kicker and will know that this profile of buyer is usually willing to pay more if he/she does buy.
Of course it may also mean that there's too many buyers in the market, which means it may not be a good time to buy.
Remember in a market system:
"those with the experience end up with the money, and those with the money and up with the experience."
In RE we normally have a noob dealing with a trained & experienced RE.
Where do you think the money ends up?