I didn't get you. What prices you are talking about? In case you don't know, you will not be charged a cent for creating a WTS thread at that particular section.
antman07, you do not have permission to access this page. This could be due to one of several reasons: Your user account may not have sufficient privileges to access this page. Are you trying to edit someone else's post, access administrative features or some other privileged system? Certain forums have specific requirements for posting, which you can find here. Some areas (for example premium articles) are only available to premium members. If you are trying to post, the administrator may have disabled your account, or it may be awaiting activation.
That's because you haven't read the rules. You need to be member for over 14 days and/or have a minimum posting requirement before accessing such area, and you were below 10 posts at the moment to try, not enough to gain access.