I've been half in the market for a Panasonic 25mm f/1.4 lens, so I've been watching eBay, Amazon, marketplace here, etc. I'm just amazed at the number of people who are asking MORE than the cost of a new lens (which is presently $499 including shipping from B&H, to destinations in the USA). Are they actually selling at these prices?!? So how much is it worth for you to forego the advantages of a new lens or camera--easy return, warranty, no doubts about condition or previous handling, etc.? I've always considered 80% the maximum I'm willing to pay for an absolutely pristine used lens, but maybe I'm just too cheap. What do others think?