The options to have more visibility are paid. Log in to your account and select MY LISTINGS from the menu. Find your ad and click on the HIGHLIGHT option which allows you to have greater visibility compared to nearby ads, UPLOAD which allows you to push standard ads to the top, below the featured ads and leaving your ad with medium exposure and finally you can UPDATE TO FEATURED which puts you at the top of the category and on the main page. Remember that the ads move around as new updates come in, but it is important to mention that the FEATURED ADS will always be at the top and above the boosted or highlighted ads.

All of the above options lead you to select a payment plan which you must choose the one that best suits your needs.