MAID is an Omnitoken - there's no need for escrow. The OmniDex exchange runs on the bitcoin blockchain. That's probably why there's no liquidity - deposits, withdrawals, and transactions all cost $5 in transaction fees and take 10 minutes.

I bought some MAID a few years back and they're no longer traded on any centralized exchanges that accept US persons. I've posted a sell order on OmniDex for 2674 MAID at 0.09600000 USDT/MAID, but there's no liquidity. They're trading on HitBTC and Bittrex for $.11. If somebody is willing to move some coins around, you should be able to make a quick $20 after transaction fees.

https://www.omniwallet.org/dex/overview