The problem with this is that those rare minis like panda and IG are impossible to find now. What if I sell you mine and then your person on the other ends decides he'd rather keep the mini than sell it back to me for the ambraces? Afterall, they are basically impossible to find now. Well then shit now I've got 1500a and no mini. And there is no one else in the game who sell me that mini your guy just decided to keep for the same price, because if there was, you wouldn't have to be asking here. (Edit: this is a factual statement judging as you've been trying to obtain these minis for more than a month now)
I'm sorry but without more details, I'm calling this out as pretty questionable. It could be a ploy to buy one of these minis at 1500a from someone who is under the impression they are doing you and your seller a quick favor.
The fact that you won't rely on a trusted middle man is frankly a red flag. It's literally what they exist for. You could have had this transaction done weeks ago.
Edit: Just to add, you've not provided a single detail about this "transaction". Not who you are. Not who this "seller" is. Not what is being sold, nor the price it's being bought at.
