I was doing a trade dbm_bones and dbm_pally but dbm_pally did not have the tax, so we swap the trade to a small item, but I still had 1G in dbm_bones trade window. so I bought 5 orbs for 1g 1s. not 1s. I then did a 2nd trade and added conditions to say payment was already made in previous trade.
There was no conditions in 1st trade as it was a mistake.

Hope this is ok

see log below

00:53 Heaven's Voice: Trade with DBM_Pally has been successfully commited. You received: Flawless Orb of Courage (5 pcs) You transferred: 11. Tax: 11
00:54 Heaven's Voice: Trade with DBM_Pally has been successfully commited. You received: The awakening relic of the order of the Hare (1 pcs)