Guild Wars 2

I see on various sites information about buy orders and sell orders etc., but I’m not seeing actual numbers on transactions.
There can be 10000 on demand, and 10000 on buy, but if the two never agree on a price, nothing moves.

Deeper into my question, what I’m trying to figure out is how people know when to give up on relisting an item.
I have an item listed for Xs XXc, and when I listed it, I put it at 5c below the previous seller.
Then someone comes in and lists like 40 of that item just a couple copper below me.

This is where the volume of material moving from hand to hand is most important, because if only 1 item sells per day, I either have to relist or wait over a month hoping that no-one else lists lower than me.

Do we have enough people online at any given time to provide decent product movement? Are these people that list 250 of an item worth 72s just super rich with nothing better to do? Or is it really worth it to just be patient?

I wait at least a week until i consider relisting items because some items are just more in demand on certain days of the week and on some days supply is higher.

Last year Dusk dropped for me in the SB event’s chest and when I sold it I listed it slightly higher than the lowest sell order, so that it was 2nd in line to sell. It sold within a few hours. Then again, I can list 1000 copper ore at 50c each then someone comes along and lists 500 at 49c, someone else lists some at 48c, etc. and a week later the price is still at 47c and I haven’t sold a thing.

I just forget about them and eventually I log in and find gold waiting for me. It’s just part of the game, if you list for the right price at the right time it’ll sell within minutes or hours, if not you could be waiting weeks.