The mixer takes between 1 and 6 hours to tumble your coins.
The fee is randomized between 1.5 and 3% on each transaction
The minimum is 0.01btc. The maximum varies depending on the size of the pool, but usually around 500-1000BTC
Your coins are 100% randomized and untraceable after mixing
If your mixer status page says Pending after 12 hours or more, you probably entered an invalid forwarding Bitcoin address. In that case, please contact support