USDT buyer offers to buy at above-market price. Scam?

Hi, I have a buyer that I met on Binance P2P who offered to buy usdt at above-market price (+20%). At first we traded exclusively on BinanceP2P. After a couple weeks, he said he couldn’t trade on BinanceP2P anymore because he couldn’t give a document that Binance asked. He asked me if we could trade outside the platform. I asked for their ID and purpose of purchase. After he gave the KYC information, I agree to send usdt directly to a wallet he gave. He buys about 2k usdt everyday at above market price. Has anyone had any buyer like this? Is it a scam?