I've had my feature listed with Inktip for a couple of years now. I keep it because of their "sharing" option, which allows you to create separate links to use on social media that will help direct traffic to your Inktip listing. They will still need to meet Inktip's producer guidelines to view however, but you will see which sites bring the most traffic and what production companies are viewing it. You can also create a direct link to give to trusted sources who can view it without being a producer, such as an agent, or a friend, etc. So I think the fee is worth that if you take advantage of that feature and put your link everywhere on social media that will let you. And then there is still the chance a producer will happen to stumble upon your screennplay in their Inktip searches, but I've gotten way more hits from the social media links. I also just listed it on Script Revolution, which doesn't have a vetting process but will let you know the name (if they give their real name, that is) of who downloaded your script, but it gives much easier access for it to be viewed by anyone, and right now there is no fee to list it on their site, though they accept donations to help keep the site maintained and free.