Is there a way to keep a classified as current?

I placed an ice shelter in the classifieds……..but the ad is now on the 3rd or fourth page……after a bunch of sold stuff….is thee a way to “bring it back to the top” so that it can actually be found? Can’t all the sold stuff be moved to the back of the list? I understand that sometimes people use them as a reference to sell their own stuff…..but I’d like to see not only what I have to sell, but what others have to offer, without wading through pages of sold stuff.