I was able to pick up AC II and Brotherhood off ebay for pretty cheap. I ordered AC Revelations off of Amazon Warehouse Deals the other day for $9.99 all on ps3. good luck!
I thought Trade & Save is over. It's probably YMMV if you have some coupons left. But I picked up Kill Bill 1 & 2 and Trainspotting last night in an empty BB. :D