Sorry for such a cancerous title, but it's crazy how many posts I read of people loosing shit tons of BTC because a market exit scammed and they had x amount of BTC. Not just vendors, buyers too.
Please do not keep any money you don't need at that time, or are planning on using very soon in your Market's wallet. Keep it in your electrum wallet, or whatever else it is you use, and then when you need it, send it through a tumbler to your Market before you buy.
This would greatly discourage markets from exit scamming and reward them less if they did, and save you a lot of time and money.
I don't get why people leave money in markets. That's like giving your money to a complete stranger and trusting them to hold onto it