Due to the internet, and how the sites allow different things to be done to attract sales, a lot of what goes on isn't quite like a real auction.
But again,,,,,,,,,,,,,,!
Many is the real auction where the auctioneer has a reserve price on an item, yet, does not advertise it. He just has a "plant" in the audience who opens at a certain point & tries to go from there.
At a real auction, the bidding continues until nobody else is willing to bid, so nobody has "auction snipers."
The best auctions are "absolute" auctions where there isn't any reserve pricing, and whatever it brings is what it sells for.
If you watch GB or other sites, a GOOD seller will start the item at a very fair opening price, or even $1, and let the buyers decide the final sale. One of our members here does that quite often. He will offer a gun here for XXX and if it doesn't sell, he moves it to GB, and allows the market buyers decide the final sale price. He's stated more than once he's had good responses that way, but that occasionally he loses a little.
I knew of 2 local auctions last weekend I wanted to attend. I wasn't able, so I put in absentee bids on a few things. At one of the auctions, I knew the auctioneer very well, and he took my bid card, and looked up his internet proxy bids, and let me know I wouldn't win, as he already had higher bids online. I appreciated that, and didn't feel bad at all. I told him the amount I bid, after premium was about dealer cost on the items. He was well ahead of retail on one gun, after premium, and told him he was going to do quite well on that one!
The internet auction sites allow for all kinds of sellers & buyers.
It all comes down to what is accepted as a fair deal. The seller gets an acceptable amount, and the buyer pays what he feels it is worth to him.
It's just that the internet allows us to see how some folks feel & look at what they have for sale.