Nothing in his post said that.... This thread has nothing to do with capitalism and we are all for dealers making all the money they can as long as it does not involve con artist like tactics.
I'm late to this thread, but it's interesting and I wish to add a comment. In capitalism, "differential knowledge" is the key to profit. It doesn't matter what the field is. You own what to you is a hundred acres of scrubland. To me, it looks like a good place to prospect for minerals. You sell me scrubland, I buy a mine. Not my problem or my misdeed that you sold too cheaply. If you can't be bothered to learn what exactly it is you own, you have nobody but yourself to blame if you sell it for "less than it's worth". Not to mention that what anything is "worth" is exactly what somebody is willing to pay for it - not a penny more or less.
The maximum I can offer on a numismatic coin I believe I can sell for $100 would be around $74. This is the most I can pay to achieve a business target ROI on inventory of 15% (and cover operating expenses) and essentially computes to a 35% markup over cost which is typical in the industry. I am not a collector or investor, I am in the business to buy it right and make money on it instantly. Knowing that I will get around 90% of CDN Bid (on average) if forced to liquidate a coin in an EBay Auction (my own research) my offer price can't ge higher than say 2/3 of CDN Bid - 65% of bid would be a nice round number. If someone walking in my shop or up to my table at a show wants more they will need to sell it somewhere else. I have plenty enough retail inventory and bullion material than to pay more, especially in this economy. Bullion I will pay around 97% of melt whether slabbed or raw as I simply regard as another form of cash. Its much easeir to buy coins than it is to sell them. As a businessman, I run a business which I operate to make a decent profit.