An inexperianced question here. Why hasn't the baby bullet vise on ebay with power arm been bought when others have been bought and sold for more? What is wrong with it? Just courious.
Could be several reasons...
1. A lot of people search "Auctions Only", there are way too many buy it now listings for daily browsing. So potential buyers might not ever see the item.
2. Condition and age. Certain people are looking for certain things. The NOS totally original ones will fetch the highest prices. The more wear and the worse they look, the lower the price people are willing to pay. Also the amount of pictures and the quality of the pictures and description can have a HUGE impact on people bidding. The more confident they are in the item, the more likely they are to bid.
3. Misspelling or listed wrong. Sometimes people spell things wrong (i.e. vice) so again not as many people see it. Or they make it too generic (i.e. Wilton Vise) so people don't know it's a baby bullet.
4. Bidding Wars... Auctions typically get the higest prices when you start out at one cent or some low number. You get people to bid on it early and hopefully you can get a bidding war going. If you start at a high price or stick a reserve often people will just pass over it.
5. Time & Day the auction ends (not relevant for BIN listings)... Sunday or Monday evenings tend to be the best times for auctions to end to maximize the amount of people sitting in front of their computers bidding.
... and the list can go on for a while, but I think I'll stop there ....