Josh - I don't know much about auction houses, but speaking as a collector, I would sell things individually. Many people are not in a position to buy a whole lot, so that might drive down the number of people interested. For example, someone who wants a Hamilton bat may not be interested in the pair of cleats, so you are turning away that potential buyer. I can't speak about fees, but I think you'd be looking at a wider audience selling on eBay. I personally check eBay first. Only later do I look at auction houses. Other thoughts?