and I regularly go through the galleries to re-organize images which have been added to the wrong galleries, or to remove extra photos, but we don't do any clean up in the Marketplace section. We don't know for sure what is or isn't still available, so we have to leave that to you guys.
I just did a quick check of some of the items listed in there, and at least two of the items for sale go to shops which say that the items are no longer available.
We won't delete these items, but we ask that you try to either make sure that the links go to working shops, or clean out items which have already been sold.
Thanks for your help, and happy sculpting!