I've been looking hard for a mint cond. used Canon 100 Macro. There are many on ebay, but I keep losing the bids because i'm suck at ebay, lol. KEH has several but they want too much. The ones on ebay are going for between 450 and 500. Then I found usedcameras.com . They have a mint cond. lens for 540, but if you enter PopPhoto1 in the promotional code box, you get 10 percent off your entire purchase, so I got it for 485, not bad, especially since they offer a no questions asked 60 day warranty. It'll be here on wed. so i'll let you know how it looks. Just thought i'd pass this on, not sure how long that promo thing will last.