Under the trade screen Bought / Sold search for Credits.
There are lots of trades starting at $1 .
This bug has been there for a while and still not fixed.
For a new player that wants to sell credits and clicks on one of those it will leave a sore taste in their mouth.
This is clearly scamming.
Please either fix this so that's impossible to do in the future.
I don't think anyone wants to sell their credits that they paid for with real money for an ingame $1.
Also, perhaps issue warning to the scammers.