Hard to believe that people haven't clued in on this yet after 6+ months of it, but so be it...
As a result of the fact that nearly ALL members lost posts (some a few...others thousands or even tens of thousands), Lowlight modified the rules for selling to make certain concessions. As long as you are a "full member" on the site (at least 100 contributive posts OR 45 days as a registered member) you should still be able to sell your stuff here even though your post count may have been dropped to zero (or close to it anyway). See here for more info on the updated rules: http://www.snipershide.com/shooting/firearms-sale/201048-updated-forum-rules.html As a result, since you have been a member since 12/2012, you should be ok to proceed with listing an item for sale.
Good luck with hocking your wares and getting your post count back up.