Hey guys.
So this isn't 100% sure or tested but I talked some dupers on PRIVATE SERVERS and they said that;
-A person puts item in market, closes game, the other person buys it and then they both have the item
-Battle: a person puts the item in the battle, closes game then the other person picks the item up and both have it
work. I am not sure, but its definetelly worth a try.
If you have any other methods, post em down, if these down work, post it down... But don't give up after a few tries!
Goodluck and gonna edit this topic