I'm no mod but it's paid to stop scammers and spammers. Its really about quality though because you too have to have certain amount of posts and time being a member here.
20 - Buy, Sell, Trade Section (BST). This is the section where you are allowed to sell items to members, or make a purchase or trade offer. If you wish to sell something on this forum, you must have at least 1 Admin/Moderator review your product before it can be sold. If you are selling software, an ebook, or a money-making method, you must supply a FULL working version (NO DEMOS) to an Admin/Mod. If you are not willing or comfortable to allow for full version, then you will not be allowed to sell here. This is NON-NEGOTIABLE. You will also be required to provide proof of legitimacy and earnings. If the proof of earnings is unacceptable by the Admin/Mod that reviews it, your offer will not be approved.
The cost for using the BST section is $20.00 per thread.