Flippa is not as it used to be. Before June, I used to sell an average of 5 sites per week with hundreds of views. I achieved this even without having my listings featured. I listed with the normal $19. I normally had the listing for between 4 days and 7 days.
From around July, I noticed that it was getting difficult to even have enough page views in order to have my listings viewed by those who were ready to buy. Sales were dwindling. It was really a tough time selling just one site per week. I later increased my listing duration to 30 days in order to get more page views and be able to sell the site. Nothing worked. At the end of the month, most of the sites were returned unsold.
Flippa also is aware that things are no longer the same. Before, I think any unsuccessful listing was given only one chance to relist the site at a reduced price of $9. Now, you can continue to relist an unsuccessful listing for $9 until the site is sold. I usually dont relist for the third time.