Idea to approach PoE trade house

Hello,

my 2nd league playing PoE and love the game!

Had an idea about trade mechanic I like to share:

Currently, if I want an upgrade on my character I search the trade site. If lucky the seller is online and responds to my whisper and the trade can be done.

What if I could specify the item I'm looking for as well as set a price I'm willing to pay. The offered currency (gold?) will be reserved, so no double spending is possible. This offer will then get published in the trade house. People could then look up the buy offers and in the trade house. If they have the item that matches the criteria (or decide to craft it) they can put it into the trade house trade window and directly exchange for the respective currency offered. This eliminates the need for both trade parties to be online simultaneously.

Further benefits I see in this mechanic:
1. No trade spam due to reservation. The amount of buy offers is limited by the currency (gold?) owned. It incentivises grinding more gold to have more buy offers active. People can then decide if they want to reserve their currency for one high-valued item or spread among multiple low-value offers.

2. No price manipulation. If a person doesn't know the correct value for an item they look up the trade site. People put false under-priced sell offers up in hope someone will also put their item up for the same under-valued price so they can snatch and resell it for a profit. Its quite annoying that the first 3 listings often are fake trade offers.

On the contrary putting up over-valued buy offers in hope that others will put up the same over-value buy offer to then sell them is no strategy because the false over-priced buy offer will probably find a seller very soon and not only is the over-priced listing off the market, the person would have actually bought the item for the over-value price himself.

3. Incentive to create new items. Looking up the buy offers someone might realise he has some pre-cursor and just needs to do some light crafting on the base to match the criteria defined in the buy offer and make some profit. He might also use his expertise knowledge in crafting to make the item from scratch if the offered price is adequate.

4. Better supply of niche items and more build diversity. Often items get vendored because it is unclear if an off-meta item is in demand. If it would be possible to cross-check with demand in the trade house alot more niche items could be redistributed enabling these niche builds to better progress

Let me know what you think about the idea? Is this implemented in any game? are there caveats in the mechanic I have over-seen?

Best

I'd love to see buy orders raised on POE Trade.
Would be awesome if when you vendored an item, it would scan trade and notify you that someone has that criteria in trade listed for xCurrency.
So you could choose between vendoring junk that is someones treasure.
Would assist with space constraints, giving players the choice between putting it in the bin or fulfilling trade requests.

It would also create a new playstyle where you could look at buy orders and work to craft custom peices for specific people.

Indeed would be cool to target craft specific items in demand

The buy order could include beside mandatory mods also desired mods on the item. I think to prevent trolling and give crafters a fair chance to fulfil the request the buy order should be up for a minimum of time (1 day or so)