Because the economy is slow - MOST drop-only/harvest-only items are never in stock on the AH. I am trying to level crafts but a lot of stuff just doesn't exist - making it hard to make progress.
I'd like to see every non-rare/non boss item added to NPCs. Even if they were super expensive, at least it would save me time from having to tediously try to fish up stuff (with my level 3 fishing which never ever ever gets skill ups) or whatever.
I'd be fine with them being stocked like guild items are currently - with only a certain amount being available - it would just be nice if they had pretty much everything. So maybe the fisher's guild wouldn't stock legendary fish - but sandfish, trout, salmon etc, yes please!
With only 7 AH slots people are just not going to put up stuff that sells, at best, for 10K a stack - and probably won't actually sell at all before getting sent back.
Please consider ways to make crafting viable for characters just trying to get started now. Thanks!