Putting this up here since I know they're Tinierme, and it's been more than enough time. I'd had a bulletin up that I was trading 5k worth of myshop/buying a Tombeth shield and they responded with InMemoryOfMelica, a 1st job (or just the look) buffalo:
He did indeed show the shield to prove he had it, but there was no actual trade, this one was cancelled so I could send half the promised repair powders first.
Roughly four minutes later, showing he had received them.
He then came out of myshop and teleported to Aquarius, but before I could question it he logged off. I haven't seen him on this character since, or I would have said something, and he must not have logged into it since I've not yet been removed. I didn't remove him because I wanted to be able to track him. I never got the shield, or any sort of payment and mentioned it immediately afterward in guild chat. I didn't screenshot that, but I do have one just for the sake of showing I hadn't spent/gained any significant amount of money within a day of this. (ilu Minty, don't shoot me.)
If Tinierme would like to complete the trade as promised, I'm still willing to uphold my end of the deal and will retract everything said here. Note that this won't alleviate any concern from others of any transactions with you, as it's been over a week now.
It's interesting to note that it's over repair powders again. I'm of a mind that this is a mule that they use to get them, since they can simply trade broken in-game equips (such as Uniques) to be repaired as needed and this is likely why I've not seen them online.