Originally posted by eddie1960 agreed. Rio's method makes the most sense. i just enter a bid and set my max. if it exceeds my max then so be it. If it's something i really want i may put in a higher bid, but generally i am cheap and figure if i miss one another will come along. for an item as common as the tak 50 1.4 it's a certainty. for the donor body my max would be very low (no more than $20 puls the shipping cost) . For the Tak I would shop a body kit and sell off the body. Many times the body kit goes for less than the lens on it's own (I'll never get that) my 50 1.4 came with a spotmatic, a variant of the Tokina auto 135 3.5 and a sigma 300 f4 (sigma needs work on the aperture the Tokina auto is stiff focus needs a cla, the body actually had a cla about 10 years back and is in good shape) - price paid $100 for the lot. If I really wanted to I could sell off the body and the 135 and 300 and basically end up being paid to own the tak
One reason that camera body+lens will sell for less than just the lens has to do with the way items are cataloged and searched. Lots of folks trawl the lens only section, fewer it seems the camera body section.
I take a wait and see approach of one of two variants. Either bid early and low, which sticks it in my summary section, or I'll just put it on my watchlist. An item that gets 10 bids on the first day shows me that it has been found by many, and will end in a sniping war. An item that doesn't get any bids, or maybe just 1 or 2 in the first 5 days (of a 7 day auction, for example), will likely go quietly. Somewhere toward the end of the auction I'll rethink my highest price and bid or rebid once if necessary,
As RioRico has pointed out elsewhere, the best auctions are where the item is listed slightly wrong - usually where the filter size has been given as the focal length. Those get missed by most bidders and are where you get the best bargains.