When creating a limit order, your estimated order total is an estimate of your final order total. The estimated order total is based off the amount of metal ounces and the current buy/sell premiums. If you have selected credit card or PayPal as your method of payment for buy limit orders, the estimated order total will include the standard 3.99% service fee.
Please note that the estimated order total may be slightly different than your final order total, as limit orders will execute as your target spot price, or better. For buy limit orders, this may result in a final order total that is lower than the estimated order total. For sell limit orders, this may result in a final order total that is higher than the estimated order total.