AKA prices have held up better than others, but right now the market is being flooded. If someone is looking at buying a gun and can get an unmilled one for $400 or less they arent going to be as tempted to spend an extra $400 for milling. If someone has a nicely milled gun to sell they are going to have to drop their price to tempt people. That said I still think the rarer mills like the immortal, highlander, sam rhodes, etc. (guns that are no longer producible like the DC mills) are holding up a little better than others. But everything depreciates for the most part, and other companies are catching up.