It would maybe be kinda nice to see some guidelines for say suits !
I do not make those but when I do go comparitive shopping depending on their numbers I guess, I do see these all over the place on pricings. Same for some other items like UO given created items. A guideline might be good on those too.
But whatever people wish to ask or charge for anything they may sell, is probably why folks may go all over the shard just to see what others may be getting for even something as simple as enhanced bandages, empty rune books, or the price of a parrot.
I mostly stick to all carpentry items, even there I have seen folks charge like 1k+ for a simple rarewood chest to 100 gp even as low as 10gp for them which is way below the cost of boards or the time it took to lumberjack em, for them...ditto for addons those prices kinda run the gamut too. My own rarewood chests are 400gp per for the 3 low end wood types. I try to include what the price of the boards cost, time doing boring lumberjacking for lotsa boards, and how many boards an item hogs up to make. Thus you will NOT see me selling a 250 board hog arcane statue for 100gp !!! Even at 10gp a board 250 boards, board hogger item to me, is 2.5 k in price period !
I don't think we can 'control' what folks charge, also why I do not sell alchemy like even I used to do. Reason one, some charge way too less for a keg^100 btls. & some more. TIME is MONEY too, potions making is grueling time consuming, unless one is a scripter which I am not. Sooooooo whatever, my own gm alchemist is going FISHING ! Siege has you and plenty of others to make potions at whatever prices, even, & those that do sell em for 7k or less, for the reg. potions are cheating themselves. Granted they may sell more in the long run but they gonna BURN OUT making em all one day too for THAT cheaply restockin endlessly to keep up with their own too lowly priced alchemy !
I think apples grapes and bombs are pretty similar all over. I don't make those any longer for my vendors either...plenty of others to do those on this shard.
While we do still have plenty of carpenters it isn't as many as everything else sooooooooo I'll stick to making just about everything on the carp. makin menu ! If they want to pay 1k for a table or 10gp for the same they can go shop elsewhere.

My prices on furny are what they are kinda in the middle anyhow.
I do think a form of promoting a Zento Trade Alliance also could be GOOD for the Zento vendors in general ie promoting our small plot of selling whatevers together as a diverse busy group could be GOOD for all of us too.
Regardless of what folks charge in Zento or elsewhere the sorriest to see are the many yet empty vendors that do NOT restock with any proficency !

Nothing worse to see than empty vendors or non restocking enough in timely fashion vendors on any shards anywhere !