6.2 - Hypixel Bazaar-Like System

[NickImpact]

What are you trying to do?
Like Hypixel, allow for a system of buy/sell orders which effectively act as a stock market.

Describe the solution you'd like
This system is meant to be used in a situation where the player is looking for an item, but can't find it normally on the GTS. Instead, they can create a buy order for said item/entry, and that order will be filled in time when a respective sell order meets the requirements of the buy order. These orders control the price they are willing to pay/sell for, and can only satisfy the other when these price ranges meet.

These options should additionally be user configurable, such that the server administrator controls what can and can't be sold via this market. These items should additionally consider custom data parameters outside of item type.

Describe alternatives you've considered
N/A

Anything else that might help?
N/A