I only see 3 by the same seller. The rest are as they should be. It may have been a forum glitch or something that I didn't see and was rectified before I went to look.
I see the 3 same ads and I expect the seller simply took the guns off the market unsold or he sold them elsewhere and chose to withdraw the ads rather than mark them sold.
In the Firearms section I see 3 withdrawn, 8 for sale, 5 wanted, 2 sold and 2 closed ad's.
In the edged weapons area I see 7 for sale, 7 sold, 2 withdrawn and 1 closed ad's.