It is NERFED as of last patch's, I send out 40 companions (all 1000 affection) for the past few months. There have been level 6 1485 and 1415's lock box's (without fail), level 5 2025 and 1930 rich lock box's (with out fail) and level 4 1250's and 1175 lock box's..... now the level fives are RARER than a pretty young blonde that doesn't have TGIF written on her shoes (Toes Go In First). The level 6's are always still there....but the meaty bread and butter level 5's are now few and far between(75 percent drop-off), with the levels 4's seeing an average 50% reduction.....YMMV but daily sending of the forty companions 5-10 plus times a day...this is my impression. It's like they did to slicing like they did to chest.....loot them / send out to many times and your penelized......