As a side point. i've been doing some modest business in a non-Uldah ward. Not raking in the coin but its not impossible either. I decided to target afew segments of possible buyers. In my case:
lvl 25 and under players
Crafters
One retainer generally sells lower level weapons and gear.
The other sells various crafting supplies. I'm not so specialized that i have 7-10 of the same things stacked for sale. I put up a few things. and then rotate my stock as things sell or rot away.
As of yesterday i had some Megalo crab legs, pie crusts, Yellow yarzon legs +1, Quicksilver etc. for sale. Some will sell (some have) and some won't but i can bring them back later if i feel the need.
My point is i'm targeting specific consumers who may have need of my wares. an instead of maximizing my possible profit because theres almost no one selling much there. I'm offering most things for (debateably i suppose) reasonable prices. If i sell something for even a couple k less then i COULD, but someone rebuys it to attempt to resell, i've still made my sale, and my profit. Now its their task to attempt a sale.
Theres always something to be said for consistant sales vs the big "Gotcha" sale and sitting on your stock for ages.
Help your local economy! Sell where you like to be!
Those are my thoughts