I'll repeat.
The longer this goes on, the lower the incentive to craft, which helps many and keeps inflation low.
Buy 100 @ 2500, sell 100 @12,500 = 100x10,000=1,000,000.. nope
sell @52,500 = 100x50,000= 5,000,000.. nope
sell @102,500 = 100x100,000= 10,000,000.. still doesn't work out. Each one of those 100 uncommon can help craft something that can result in a 2-4M sale.
I'm going to stick with, the level of manipulation is simple griefing and should be dealt with. It's likely not profit driven.