I had one of these ages ago offer to upgrade my Ghost. I asked them if they could upgrade any armor and was told, "sure, it just depends on how much you want to pay" or something close to that.
I offered them a pixie set and asked them if they could upgrade that for me to BOAR since that was what I was trying to get at the time and I was told, "Sure I can, but that won't be cheap."
My immediate reply was to place 500 PED in the trade window and say, "will that cover it?"
The answer was, "Sure, I just need you to confirm the deal and give me about 30 seconds to finish the upgrade. Hurry and confirm so I can get to work."
My final comment before I closed the trade window was to ask if they had a single piece of Boar that I could see to make sure that the product was what I wanted.
The answer was something along the lines of, "How am I supposed to have that when you didn't pay me yet?"
That was the end of the negotiation follwed up by an immediate annoucement in global chat that "so-and-so" was offering upgrade armor scamming to the highest bidder.
I never saw that avatar again.