How much have you grinded for one pice of glamor?

[RatKing]

I've just completed my 20th run on Ktisis Hyperboreia trying to get the reaper chest piece.
I've seen every piece of gear multiple times now but never the chest piece. I'm starting to believe there actually isn't one in this dungeon.

What's the longest you have run a dungeon for grinding out one piece?

You do realize every run at the end of it you get a free drop right, this game has a hateboner for you receiving double items from dungeons so why not just keep them in your inventory? I remember doing it and no longer getting that same drop.