If you guys could go ahead and restrict the use MBs while being on another world

[Doljax]

They are never good because you guys dumps prices to ridiculous low amount. Anything that is not lvl 80 mat is like dirt and because of it new players struggle to get any gil at all.

This problem was not caused by cross-world buying. Yes, some mats don't sell well on the marketboard. Find the ones that do, and farm and sell those. There are plenty that are sub-80 - and even sub-70 - which sell for a pretty penny still. Elementary MMO money making.

Low prices are bad, gil cidculates slowly and there is less opportunity for average player to make good gil on mb.

Low prices are good, because it makes DoH classes easier to level, which in turn allows people to produce items that are worth something. A player not doing research into what they can capitalise on to make money is not an issue caused by cross-world trading.

If there is anything, people visiting low populated servers are completely destroying their economy, they lower prices to vendor selling price and anyone on the server playing will struggle to gain any gils because THERE ARE MORE SELLERS THAN BUYERS AND MARKET BALANCE IS COMPLETELY messed up.

If only there was some kind of measure through which it could be stabilised; something through which prices could reach something of an equilibrium. Also, the problem of mats selling for vendor prices was not caused by cross-world trading.

The person visiting other server should not be able to sell stuff on it.

They should, because it has not as of yet had a demonstrably negative impact.