Aww, now you're just trying to be nice
And well, since you asked! From what I heard and saw the shop SEEMS reasonable enough though xp boosts and yadda yadda still irk me... but on that note, its really more of a principle thing. Guild Wars 1 had the same pricing model 'free' (ha) and made up for that by cleverly releasing pricey (eh, imo, obviously) expansion at really regular intervals. I mean, in my opinion, you can go subscription, free with microtransactions or buy-once-and-own and... Guild Wars 2 breaks that rule for me. That is all. It -feels- uncomfortable to me when I play, almost like they are cheating. Hm... kind of like the Sims with its bajillion expansions (I think they even made one for weather, what the frig...). Apologies for the lack of a better word or explanation.
Aaand the economy is basically me being either crazy paranoid or just disappointed. Paranoid me sometimes suspects that they (tm) had the Trading Post AND mail down intentionally to boost their awesomesauce shop (again with the shop! bad psyco!). Disappointed, more regular ol' me just thinks that simple things like grouping and trading should be in an mmo at launch... working.
Of course, thanks to the all-server-encompassing scale of the Trading Post prices turn out to also be ridiculous. This is good for the person that just vendors every piece of equipment they happen to loot (and can't wear/isn't an upgrade) as the buying prices are very low, but it is incredibly bad for crafters. And who crafts, you ask? Well, in GW2, everyone (and their aunt) because it gives a pretty sum of xp, especially around the higher levels. Well, okay, people that really really hate crafting probably won't do it, but I suspect that those will be rare. In any case, this in turn means that a larger-than-usual crowd of people all over the world (you can't even rely on peak times or whatnot, buh :-/ ) is selling and undercutting like madmen to the point where, again, vendoring your stuff gives you a better price than using the Trading Post.
And this doesn't even include the fact that (this part is information from Reddit, I have not sold anything on the Trading Post myself due to the reasons mentioned above) when you sell something on the Trading Post, you have to pay a percentage when you put it up (perfectly fine), which does not get refunded when you chancel the auction (meh...) and if you sell it you also have to pay yet another percentage (*grumblemumbles cursewords*). Its not as bad as Diablo 3 were you get fined 3 times, but it still sucks - especially with profits this low.
I think the only things that will sell well right now are crafting materials, maybe? For the lazy and all that, but then again right now many people are still questing so why would they walk past/ignore nodes? So, maybe later? Possibly? I don't know...
You asked!
(and this went very OT rather quickly...)