How long it takes to get the coins out
A withdrawal is the coins leaving the market’s wallet for an external address, and the time is the network, not the market. Most leave within the hour, and the only cost is the fee the coin itself charges.
The time
The withdrawal leaves within the hour in most cases, and the time is the network processing the transaction, not the market holding it. The market’s job is to sign the transfer and broadcast it, and the network’s job is to confirm it, which is the same confirm count as a deposit. The wait is the coin, not the shop.
The only cost
The only cost is the network fee the coin charges to move a transaction, and there is no separate market fee on top of it. The fee is variable, because it is set by the network’s congestion, and a busy chain is a slower and a dearer one. The payments page has the confirmation counts by coin.
The habit
The habit that saves the most trouble is to withdraw as soon as an order finalizes, not at the end of the week. The escrow is the protection while the order is open, and the wallet is the risk after it closes, so the moment the order closes is the moment the risk moves, and the withdrawal is the move that follows it. The exit page is the honest account of why the habit matters.