Under the heading of "trying to help by not wasting your time," you should be aware of the "new member" requirements for selling on The RPF first:Did you try here?
For new members, selling is not permitted. A "New Member" is defined as being a member less than 45 days and having fewer than 20 posts. Once you've been a member for at least 45 days and have 20 or more posts, you will be considered a "Full Access Member"; at that time you will be allowed to buy and sell freely in "The Junkyard".
If you're looking for a "quick sale", the RPF probably isn't your best choice; if you can wait it out, it's probably the best place on the 'Net. Sorry, but I don't have any alternatives to suggest.