I have seen this diamond grade model https://www.gunbroker.com/item/969484520 sell for 2500.00 before but have seen different models called diamond grade, receivers were sculpted different. Also small frame 28ga have brought 2k before. Hope this helps. I only buy what I’m willing to keep or at least think I am. I wouldn’t call those prices a no brainer and your going to make money but sounds good for a gun you desire if they are mint.