Once again,I must say if it is not my deal it is not my place to decide if the profit is excessive. I have both bought and sold things either too cheap or for too much. If you ask too much for something and I pay it then that's my problem. If I ask too much and you pay it that's your problem.
I am not talking about cheating the other party, I'm talking about trading and dealing. If I have $200.00 in a $500.00 item and I sell it for $300.00 I'm happy. If the next guy or gal makes the other $200.00 I don't care, and neither should a bystander.
That's you. You are knowledgeable about the values of these things.
If a widow walks in with a $1000 Samurai sword her late husband brought back from the war and is offered $150 for it, or a slightly demented old man offers his grandfathers 1892 Winchester for $100.....what then?
The original question was "Would you have said something?".
Something like "Hey Mister, they are offering too little." or "Hey, I'll give you more for it."
It has to do with 1) Preventing a rip-off 2) Butting into a transaction.
Moral questions. as posters have made obvious.
I've sold things too cheap when I needed fast cash. Did it with eyes wide open. No problem.
May do it again, who knows?
I've bought things from pawn shops and individuals that I knew were worth far more. felt very good about it.
Then. Not now.
It's now a question of morality. I have to examine it. I have to ask myself - what is 'excessive profit'? What is a 'reasonable profit'?
Because I'm a Christian now. Not perfect, far from it, still a sinner.
But different than before.
How can I possibly love my neighbor and take advantage of his ignorance?
Or let someone else take advantage of him, when all it might take to stop it are a few words?