I've thought the Vivitar Series 1 450mm f4.5 mirror lens might be fun to play with and so I watched an ebay auction last night that had this mint example going for just under 400 bucks with 1/2 hour to go. I figured they were worth about 200 bucks. I just looked at the auction (320134479139) to see what it sold for and I just about had a heart attack: $1042.00! With patience you could get a nice MF 300 2.8 with a TC14b for under that price. I happen to like the Nikkor 500mm F8.0 so I'm a mirror lens fan, but I've never heard this lens is anything special. What is going on? Another example of ebay fever at work?