I set up an RSS feed from eBay, using the search term "caving" that is updated every 30 minutes. Check the graphic below for a quick look at what's up for auction on eBay that relates to caving. (Note: apparently some sellers can't spell "carving," so you'll see some non-caving related stuff from time to time. It's not a goat caving... it's a goat carving)!