PC Money duping using Eternia Crystal Sell & Buy

[.T]

Steam or GOG

Steam

Single Player/Multiplayer

Single

Operating System

Windows 10

Terraria Version

1.4.0.5

Controls Used

Keyboard/Mouse

Money duping with Eternia Crystals.

Eternia Crystals sell for 37 and 50, as a Terraria player might know (well, I don't think normal Terraria players remember shop prices) (btw the bronze and silver metals represent coins, there should really be an emoji for that). Is it my own eyes or my savings\piggy bank confusing me????
The sell price and buy price are the same for Eternia Crystals, anyways

 

[Kurasu]

When you purchase an item, until you have backed out of the seller, the price is the same to sell it back to them.
That's why the sell and buy price are the same right now ( I assume).