art money doesnt do anything, just for screen shot purposes since its client side. it says trade failed because all if you turn your 4561 money to 1000000000 and try to buy anything. they put theirs in and you put in 1000000000 in the money thing and click confirm you probably still see 1000000000 but they see 4561 so they exit. the only way to get alot of money is find a way to make it so the monster drops 11mil,( you cant drop 12 mil, i tried it ) and then pick it up. that will take you hacking the server for that, everyone knows how to do artmoney now, its no use, cant scam or nothing.
In conclusion, dont get your hopes up searching for artmoney trying to scam people, because it doesnt work.