What do the different options mean on the seller page?

Buy Now Price: This feature is located under "Auction Starting Price" and allows you to list an auction with a fixed price in addition to a starting bid. As long as your auction has not received any bids, a buyer can choose to buy it immediately for the price you set as the Buy Now price. However, the possibility of buying the auction for the Buy Now price disappears as soon as the auction receives its first bid.

Reserve Price: This feature is also located under "Auction Starting Price" and is primarily intended for items where you want to set a low starting price but still be sure that you do not receive winning bids below a certain amount. All bids below the reserve price you set are considered non-winning and if you do not receive any bids that are equal to or higher than your reserve price, the auction will end as unsold.

Highlight: This feature is located under "More Auction Options" and gives your ad increased visibility in search results by highlighting the ad's title with a yellow background.

Featured Item: This feature is also located under "More Auction Options" and places your ad higher in search results.

Restart Ad Automatically: This feature is also available where you choose the ad duration. If you select this feature, your ad will be automatically restarted up to two times if it does not sell. The feature itself is free, but if you have selected any paid options, they will be charged at each restart.