Trade Satoshi doesn't deal in funds, just coins. Selling or buying at the bid/ask is instantaneous, but if you write your own order you may wait for it to be filled.
Transferring coins into Trade Satoshi has taken me anywhere from 10 minutes to 10+ hours (BTC tends to move slowly). I haven't attempted a withdrawal from TS yet, but I assume it will take about the same time.
News 
Market Data 
Discover 
