Thankfully, I do not need brass at this time. I would have ordered some, but as you said Diamond K is about the only ones around that have any on hand. Since they are a sponser here, I thought I might throw some business their way. I think their prices are out of line - more than new brass costs. I would guess that is why they still have brass on hand. On the other hand, evidently, people are paying the price, or they would drop the prices. They are just not going to make a sale to me and I have a looong memory of people making a handsome profit at my and fellow shooters expense.
Good Luck and Good Shooting