My wife had this issue too on Ebay. She was trying to buy an estate pipe for me, but every time she bid it would go up by a dollar. Then it would sit there and she would bid 2 dollars, then it would go up one dollar. We figured someone was doing that to inflate the price.
Not necessarily. It sounds like you were simply up against Ebay's proxy bid system from somebody who'd placed a high maximum bid. Assume I see a pipe that I really like that's currently listed for $25 and decide I'm willing to pay $100 for it, for whatever reason. Maybe it's really worth that much. Maybe I just really really like that pipe. Maybe I'm Bill Gates and think $100 is a reasonable price to pay for a stick of chewing gum. Whatever. So I enter a maximum bid of $100. And then the fun starts.
My maximum bid may be $100 but Ebay's software will only bid the next minimum increment, so my bid comes in at $25.50. Your wife sees my bid and ups it to $26. The software
instantly rebids another $0.50 without me ever doing anything. Every single time someone tries to bid on that pipe, Ebay will place a new bid on my behalf, increasing the bid amount by a small amount, until my maximum bid limit is reached.
This is actually a very common scenario. Repeatedly being outbid by 50 cents or a dollar is a good indicator that this is happening to you. If you take the time to look at the bidding history, you'll see that you're being outbid by bids that were placed hours or even days before your bid. Nothing nefarious going on.
That's not to say that Ebay is completely free of auction shenanigans. For example, while they try to prevent people with second accounts from bidding on their own auctions, the system is actually somewhat easy to get around if you know what you're doing (IP proxy's, etc). Likewise, there's nothing to prevent their "friends and family" from bidding on their auctions with completely separate accounts. I've also seen instances where bids were withdrawn at the last minute, often with the excuse that the item was damaged or some such, only to be relisted a few days later with the exact same pictures and descriptions. But for the most part, their auctions are pretty honest - Ebay makes does its best to make sure of it. They make way too much money off the system and know full well that it only works if buyers can trust that they have an honest chance of winning and they'll get what they pay for.