I talked to them about it. They have a very straightforward way of doing things. If you don't like the price no one is making you sell to them. But I felt they were very professional, open, and honest during the process.
Their policy is to calculate how much they can sell the gun for and give you 65% of that. At least that is what they told me. That number may vary by location.
The rifle I took to them was somewhat unusual, only made for one year in the 1980's. I had already done some research and was pretty sure what it was worth. The guy looked over my rifle and spent 30+ minutes online and making phone calls to determine its value while I looked around in the store. They texted me when ready.
They determined my rifle would sell for $700 in a store, which is exactly what I'd determined. But 65% of that was $455. I declined their offer, shook the man's hand and left. No hard feelings either way. They were upfront and honest. No one was trying to cheat me or insult my intelligence.
Selling one anymore is a PITA, especially if you do it online and have to deal with the hassles of shipping. Had they offered me $550 I'd have taken the deal. I don't mind them making a profit, that is why they are open. I did eventually sell it for $600, but it took time and work. It was worth the $145 over what Cabelas offered to sell myself. But not worth $50 more had they offered me $550.