IMHO some of the pieces have starting prices that may be a bit too high, or the S & H seems higher than normal, $14/$15 to ship one piece. (I realize that the amount is made up of the actual shipping fee and then added to it are the materials, box, peanuts, bubble wrap, and that these costs add up.)
I do bid on something immediately if I want to keep track of it, but many times will lose the item because the auction end is during the day and I am at work.
Other factors I have considered is that the seller has low sell numbers. Something I have started looking at since a recent "burn" on a Cape Elizabeth that arrived damaged due to extremely poor packing.
Lastly, alot of the pieces I am seeing I already have, or have no interest in buying. I buy the lights that "strike my fancy", something about them that is different, the location, tower type, even the name.