Leon nailed it - many consignors won't consider an auction that doesn't have a printed catalog.
That said, once I started doing one I discovered there are a lot of items that I can present much differently, and more effectively, with a printed catalog. As an auctioneer, I was originally not a fan. Now I'm a big fan, and I'm always looking at ways to improve my catalog and make it nicer and more effective.
-Al
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