Wow! Seriously? Even all paid retainers are full too?

I have capped all DoH/DoL, and only have 2 free retainers, and I can still sort stuff with some free spaces.

Mind you, I love Skyrim's hoarding, but OP need to seriously get rid of useless stuff.

Here's a hint: Check market prices. If said item are being sold with same (or even lower) than npc price, then npc all of them. Should already tell you that those said items are lots of abundance.

And if you have capped DoLs, consider making clearance sale of your stuff since you can just farm them anytime you want/can.