I'm sick of coffer stuff! UGH

As if the drop rate can't be bad enough on keys sometimes, I still don't even get the item when I actually get to open the chest. I get effing woolen tights and wand of tides EVERY TIME.

Square Enix, please make the coffer key a rarer drop and make the chest drop close to 100%. You can go to my history of killing and see that I've put so much effort into this one specific coffer NM and haven't gotten a single drop on the item.