You created an account and immediately posted a high priced item for sale on the marketplace, with no other indication that you're a real person? That's classi

You created an account and immediately posted a high priced item for sale on the marketplace, with no other indication that you're a real person? That's classic scam-bot behavior right there. This isn't a criticism of you - what you did makes perfect sense. But I'm not surprised at all that you got caught by a ban algo. The only surprise is that you were ever unbanned.