figuring out visitor/watcher patterns

While scraping, I come across stuff worth more than scrap. Put them on eBay with varying success. A couple of months ago found a functional vintage amplifier. Did some limited testing, the unit seemed quite good, and apparently valuable, so I put it on eBay as Buy it now with Best offer for about $200. There were a few views, one or two watchers, but it did not sell. Lowered the priced, tried again. No luck. Lowered it to $99, put it as an auction for 7 days. In the first 6 days, I had about 70 views and 3 watchers. Then, in the last 24 hours, the viewer count went to about 150 with 15 watchers! I realize that in many cases the watchers are not the people who want to buy and who are just waiting for the last 1 minute of the auction to place the lowest possible bid, but instead folks with the same item trying to figure out if there is market for it. But usually when I had even half the watcher count as this time, I would get a bid or two. You know how many bids I got this time? ZERO! The thing did not sell. Never had that happen to me before with that many watchers. And why did I get that many of them this time but very few when I had it posted for $150 or $200?

Has anyone try to find any sort of patterns in the visitor/watcher counts for the items they tried to sell (or buy) and then use that to actually sell their stuff better? Yes, I know, I need to have a good description, I need a market for my item etc etc, and maybe I am trying to make things more complicated than they should be, but it's just that what I got was very different from what I expected, so I thought I would do some "eBay psychology research"



Thx