Nope ... I attribute it to human nature, being what it is. I've noticed that some people decide on a set price they are willing to pay ... and they just bid that.
... takes out all the guess work! They figure that if they bid high enough to start with, they aren't likely be outbid. Or ... they've played the auto-bid game, and were contantly outbid on an item, saw what they usually win at, and just bid that price.
I guess they don't want to take their chances with the auto-bid feature ... and just want to see their name at the top of the list.
I'm sure there are as many reasons ... in direct relation ... to as many people who do that ... LOL!