Wait, 12 bucks and they survived three paintings? I'm sitting here staring at my $40 set that started shedding hairs on the second canvas like it owed me money. What gets me is the clean edge part, because that's usually the first thing to go on cheap brushes. Mine turn into little brooms after one wash. Are you doing anything special when you clean them or is the brand just weirdly good?

Random strangers teaching you stuff is overrated, just read the docs.

Shifting cans around only works if you actually do it, so the real fix is making the old stuff impossible to ignore. Honestly the sharpie dates on the lids are the only part of your system that was ever doing any work, since a quick look at the top tells you the age without pulling anything off the shelf. Try flipping the whole shelf so new cans go in the back and you grab from the front, then you never touch the old ones until they are the easy reach.