Gunbroker is high. Gunsinternational.com seems to be better. Lots of guns sit on GB for long periods of time as an indication of them being overpriced.
I do not deal with Gunbroker any longer since I was burned on an altered gun that the seller refused to accept as return. Seller said that he was disabled and needed the money. Gunbroker tells you that they have insurance against such, but they don't have a phone number to contact anyone and don't respond to emails in a timely manner. I kept getting the same request for an explanation of the issue. Then they finally offered to examine the rifle if I paid to send it to them, and they might give me up to $500 on a $1300 rifle.
