You're lucky we have a For Sale section at all, until recently it was removed due to too many issues with scammers and frauds.
The main point is and always has been that the admins have jobs and lives outside of this forum, this forum is something that they take the time out of their busy lives to look after and maintain for our benefit, they don't get paid to do so and it's not operated as a business.
Could it be quicker? Yes. Are you paying anything for a service level? No.
I appreciate that it can be frustrating that you've taken the time to type up an advert, and I too would hope that it would get actioned in a timely manner, however I also appreciate that someone approving my for sale ad, out of the hundreds of others (not to mention the other things they have to do on a daily basis that are nothing to do with this forum) probably isn't at the top of someone's priority list.
If you really want to get an answer to your question I'm pretty sure that the admins direct email addresses/PM details are available on here so you can go straight to them with your concerns.