If nobody buys that knife and just sits on the exhange with no interest in buying - it's over priced.
Or, it is a limited market. In a market with a limited group of buyers, an item doesn't have to be overpriced to sit for sale for an extended amount of time.
Real estate, currently, would be a good example. As many of you know, I've been sitting on a house for sale the last several months. The market sucks to be a seller - great to be a buyer. Could I sell it if I
really wanted to? Sure... make it enough of a bargain that a real estate agent (or other investor) would buy it for an investment/rental. There are lots of home sellers and fewer home buyers currently. Does that make my home overpriced? No. (Yes, I have dropped the price by about 18% over the last 10 months to reflect the market.)
Say, I've got a '70 Fiat Dino Spider for sale. (I don't - I owned 3 Fiats and a Triumph in my teens so I remember a bit about it.) The Dino Spider was a joint venture between Ferrari and Fiat. Ferrari supplied the V6 motor (three 2B carbs) - Fiat built the car and put it in a chassis. Ferrari did it to have enough "production" vehicles to qualify the motor for racing - Fiat, to get an exceptional motor. They made roughly 1,500 between '67 and '72. The Fiat badge will throw off all average car buyers - the Ferrari posers too, since there is no prancing pony. It will only attract a car enthusiast who knows something about racing and the history of this vehicle/motor.
It's February. Let's say I want to sell the Fiat for $10,000. It's in good condition. Relatively original but not museum piece. For arguments sake, let's say the last handful sold have been anywhere from $10,000 - 25,000. if it takes 6 months, heck, even 2 years to sell the car, does it make it
underpriced? I don't think so... I think it might take some time to sell due to the limited number of people interested and their having the funds at the same time. I could sell it in a day if I priced it for $500 - some kid might convince their Dad to buy it for a single drive to the prom.
Likewise, if we use the same argument stated for items being "overpriced," we can conversely apply it to items being under priced. (No, let's
please not talk about Foo and the Leaner again.

) If a blade sells on the exchange in <5 minutes, with this logic, it was underpriced. What length of time do we place on a blade staying on the exchange before we judge it was
appropriately priced.
I don't know.
None of us do.
I think that was the only point Tony was trying to make: it is a matter of opinion and personal judgment. There are no hard/fast rules. A blade may be priced at a point that an individual isn't willing to make the purchase.
A blade may be higher than I am willing to pay... some custom fighters, I would be willing to spend far less than the typical *sold* price just because they're not my thing. That doesn't mean the buyers got fleeced. It just means I'm not interested. Take that same blade and sell it for $50... where's my wallet?!
I think Tony just took umbrage that you present the idea of "overpriced" as fact, not opinion.