I agree with that statement. The knives are your property and it’s not a matter of where to sell them but don’t you think that if all other dealers posted them on their website and sold them in minutes that if the dealer in question wanted to sell them for more than minimum price he could have posted them on his website at a higher price versus putting them on an auction site to see what the market would bring him
I don't know who the OP is referring and don't want to know. GEC has a MAPP, but the "M" is minimum price not maximum price.
But it would give me more heartburn if GEC started telling me how to sell knives that were now my property.
In my experience, whenever an entity exists that takes advantage of a market to increase the gain over the competition - the market responds.