HALF OFF any collectors edition 3 months or older at Sacramento/Elk Grove Bestbuy!
This is probably YMMV.
Went to my local Bestbuy in Elk Grove, CA today to pick up Darkness II and the gaming supervisor RIZ told me that any collectors edition that's been out for 3 months or more are half off. They're trying to get some traffic in and old stock out. He gathered a few collectors edition and placed it on a table near the PS3 section although if you find a collectors edition that's not on the table but is 3 months or older it should still qualify for half off. I managed to get the last copy of Darkness II for the PS3 and I also picked up AC:R and Soul Calibur 5's Collectors edition for a total of $56.00. I was told that this may only be for TODAY but Riz is trying to push for the whole week.
Some collectors edition I saw:
Xbox-PS3: Prototype 2 (includes steelbook)
PS3 - Mass effect 3
PS3 - Saints row 3
Xbox-PS3 - Soul calibur 5
Xbox-PS3 - Resident Evil ORC Bestbuy Limited edition
Xbox - Final Fantasy XIII-2 (1 left)
Xbox - Street Fighter X Tekken
All were about $40 to $35 after the half off. The collectors edition didn't ring up as half off so you would need to see a gaming associate or speak to Riz to get the price adjusted.