As the previous posts have suggested, we implemented the selling controls because there are too many people who will use the site for selling purposes only. Being able to sell is a benefit you acquire after you have demonstrated a minimal participation in the site as a whole.
The site's primary purpose is to provide a place for marine aquarium hobbyists to exchange ideas and learn from each other. Selling is a secondary activity. As has been mentioned, if your only purpose for joining and using Reef2Reef is to sell, contact RevHtree and he will be happy to sell you a sponsorship. With that sponsorship you can post a banner, get listed on the sponsors page, and have your own forum to sell whatever livestock or equipment you want to sell, within the rules of the site. If that's not an option for you, eBay will be happy to have you but, again, you'll have another set of rules to follow there. A third option would be to set up your own website. Then you can sell anything you like, provided you follow the rules imposed by your domain/site hosting company.
With whatever avenue you choose, the Reef2Reef moderators wish you the utmost success.
Gary