What someone paid for an item does not even enter the subject when selling. The price someone paid has no bearing at all on the selling price. If someone gave $50 for a $100 knife, it's value is still $100, not $50.
I mean, if you get a knife for a gift (free), does that mean when you decide to "sell" it, you have to give it away because you have no money in it?
No, that is silly. Price is set by market value, supply, demand, not what someone paid for it.
As an example, I tried to sell a cell phone today. I paid $200. I asked $30 and only $5 shipping. The phone is in mint condition, the protective cover is still on the phone, that is how little it was used and how well it was taken care of.
Did it matter to the potential buyer that I paid $200?
No, only the value of the phone NOW, at this time, not when I bought it.
I would also prefer to see the price stay up. I don't care if someone paid $10 and is selling for $50, especially if it is a $100 knife, I am still going to buy it, I am still getting a deal and he is turning a 5x profit, we would all be happy, however, I understand there would be those that gripe, but hey..., they will find something to gripe about, if not this, it WILL BE something else, LOL!!
Wayne, if you pay $50 for something, by the very definition of value, the value is $50. Anything else is an artificial construct.
Knife forum private sales are a lot like the real estate market. When times are good, we all believe the nonsense about how production knives are a good investment, how custom knives never lose value.
Now that things are not entirely rosy, the real values are more apparent.
Trying to sell something in this market will expose the real value of it. The value is whatever someone is willing to pay for it.
You'll have your bumps, a lot like the idiocy going on with balisongs (BM42 in particular) but at the end of the day, if you sell it for $50, then the value of that item is $50, not $100. We all want something for nothing, but the real value is at the value of exchange, not the perceived or imagined value.