Hello,
The ratio on a trade is not the problem. I understand it's legal. BUT.
Let's say player A has more point than player B
Player A buy 300 metal with 100 deut to player B
then
Player B buy 200 metal with 100 deut to player A
Player A got 100 metal from a lower player freely (PUSH). Regardless the small market fee
Note: A game admin and a game operator confirmed me this was legal. So here I am to make a complaint about it
Note: On FR servers, hundreds of people are banned for that, but not here.