Not sure where this stands at the moment, but I thought I'd throw out an idea.
I can't remember which site I saw this on but the home page of the venue had a slideshow that I think was tied into a flickr account. Photos of members' work were uploaded and a continuous slide show was embedded right on the home page showing the work of the members. If I remember correctly you could also click on an individual photo and it would display the information for that piece on the flickr site. (Sorry so vague, but I looked at soooo many venues before deciding on this one. It wasn't CraftStar, they do seller videos.)
I was thinking that might be a good way to feature everyone's sold orders, maybe?
I do know the one thing I didn't like about it was there were too many of the same seller displayed back to back with different categories all mixed in. So if you were primarily interested in one category, you had to sit thru several photos of things you might not have been interested in or were looking for. The mix wasn't as 'mixed' as it could have been if that makes any sense.
Another thought if you like this idea would be to maybe have one on the main page with a 'mix' of items sold in all categories and one on each category main page with just sold items that pertain to that category.
Just a few thoughts.