We've opened the dedicated buy/sell chat because there were many users who wanted to trade USDX before listing. They've started to make offers in our main chat and we decided to create a separate chat - to make things organized, easier to control and safer. So we've hired escrow agents who help to reduce scam risks. In other words, the initial idea of USDX trading was coming from our community.
Reg the low sell price: some people got USDX via Airdrop (for free), so they don't value it enough.
Reg USDX backing: the token is collateralized by our core coin - LHT - which will be listed soon.