The 800k one's were prolly my vendor when I was short a couple mil for a brac. However Now that I have obtained what I wanted, my prices on things that are a guaranteed sale, have returned to the norm.
ie: Bgs Clearance, any1 who knows of it, knows I have pretty close to the cheapest prices, and the thing will not stay stocked. Being the fact that I in-game search every item, and make my prices 30-70% value of the results.
Im not just some random jerk that runs his mouth, I actually pay attention to what things sell for.
Maybe you do find some here and there for alternate shard prices, but that's one here, one there.
I run through them constantly @ 1mil, it is a fair price, as when I do my in-game searches, I see them for 1.5+, Constantly.