Ordered it for $13.99, which includes free shipping from: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=ADME:B:EOIBSAA:US:31&Item=370104670700 To attach the tube to the camera you screw up the knurled ring that's around the lens. This adapter holds 46mm filters. I plan on buying a snap on General Brand lens cap ($4.95) from B & H. I like keeping this adapter on the camera because it gives me more to hold on to and keeps my fingers off the lens.