Here are some calculations to show how to arrive at the final contract price when buying or selling options.

SELLING 10 OPTIONS at $0.25 per contract

Price	QTY	COMM	Total
$0.25	10	$6.65	$243.35

PRICE
The price is the actual price that the contract was settled at. It’s possible sometimes that this can be fractions of a penny, in other words, 0.255 because sometimes the contracts can individually settle 1 cent apart, and cause the average price to be different than a round number.
QTY
This is the quantity of contracts that are in the transaction. For the example, 10 contracts. Remember that in standard option contracts, there are 100 shares in each contract, so this deal represents options representing 1000 shares of stock.
COMM
The commission paid to the brokerage for handling the options transaction. Even in brokerages with $0 commissions, usually there’s something charged for the handling of options. At TD Ameritrade, it’s currently about $0.65 per contract, so 10 of them, results in a $6.50 commission. I have seen this vary from time to time by a few pennies, but who cares. USually it worked out to about 6.60-6.67 per lot of 10.
TOTAL
This is the line total processed for the transaction. In this case, because it was a sale, the commission is “taken” from the total proceeds to arrive at the final amount. The calculations realistically go like this:
$0.25 x 10 * 100 = $250.00
$250.00 – $6.50 = $243.50