Describe the bug
X is a number greater than Y. Player 1 sells an item at price Y. Player 2 buys that item at price X. Player 2 loses X money, but Player 1 gains Y money. This destroys (X-Y) money. Player 1 recieves a notification claiming they sold it for X money, but they actually only gained Y money.

Example: I listed 1 cobblestone block at 50 each. Someone buys it with a buy order for 1 cobblestone block at 100 each. Player 1 recieves a notice claiming that they sold 1 cobblestone block at 100 each, but they only gain 50 to their balance. Player 2 has lost 100 of their balance.

To Reproduce

1. Player 1 lists an item for sale.
2. Player 2 tries to buy that same item but at a higher price.

Versions (please complete the following information, do NOT say "latest"):

• Minecraft: 1.12.2
• Mod Version: 1.12.2 - 1.4.1
• Forge (If applicable) forge-1.12.2-14.23.5.2847-universal